Introduction

COVID-19 is rapidly spreading worldwide, and one of the main avenues that have contributed to outbreaks and community transmissions is religion, particularly religious communities and their spaces, and religious beliefs/disbeliefs of COVID-19 itself. Religion is “[…] a complex of culturally prescribed practices” that depend on “supernatural powers.” Religion often serves as a basis for social organizations, such as communities and institutional spaces, that may involve the performance of individual and collective ritual practices, beliefs, and actions (Smith, 2019, p.22). As a social determinant of health, religion largely shapes public health issues such as epidemics and pandemics (Idler, 2014). Indeed, religion and infectious diseases have historically been deeply entangled (Idler, 2014). In the history of epidemics, in particular, religious communities have played an intimate role in shaping collective beliefs or theological systems which inform responses to health crises. Some religious practices and rituals have also been known to pose a risk for infection and have put people within the religious communities particularly at risk of contracting infectious diseases.

As witnessed thus far with COVID-19 pandemic, religious spaces (e.g., churches and mosques) and rituals (e.g., pilgrimages and funerals) have been drastically altered or halted due to restrictions imposed on any social gatherings. Concurrently, some religious communities, particularly those with a tendency to be politically conservative (e.g., evangelical Christians), have defied government-suggested quarantine rules. Some religious communities also have continued to hold large services, which have gone on to further increase the spread of COVID-19 among those in the community and beyond. In such instances, religion is positioned against the virus, and broadly science, as a deceptive evil from which true faith and trust in God will protect (or spiritually vaccinate) true believers. Such trends have been noted in South Korea, Trinidad, the USA, and other countries (Quadri, 2020; Wildman et al., 2020). The latter instance raises questions of religious freedom and liberties, which are tied to rights discourses in neoliberal secular states. Furthermore, the impact of COVID-19 on one’s physical, mental, social, and emotional health can be more harmful when one’s religious identity or belonging intersects with other marginalized identities (e.g., women, people of color, socioeconomic status).

Religion has played a significant role in public health crises, such as with the spread and mitigation of HIV/AIDS and other infectious diseases (Blevins et al., 2019; Idler, 2014; Pugh, 2010). However, the complex dynamics between religion and infectious diseases has been largely overlooked and understudied (Kawachi, 2020; Ransome, 2020), especially within an interdisciplinary framework. In this context, more research on clarifying the association between health and religion as an important social determinant of health is needed to provide a deeper understanding of religion’s role in individual and community health (Kawachi, 2020; Ransome, 2020). As we are currently living in the COVID-19 era, addressing the role of religion in the context of COVID-19 is timely and necessary (Carey, 2020; Hart & Koenig, 2020). Therefore, the objective of this systematic review was to summarize the roles religious communities play in the transmission, mitigation, and/or adaptation during the early stage of COVID-19 pandemic (from December 2019 to July 2020).

Methods

This study used a systematic review study design to summarize the literature. Systematic review is a structured literature review that provides a comprehensive synthesis of data that are extracted from relevant studies. It is beneficial for readers who want to look at objective and unbiased data for a certain research question in each article selected for the review (Aromataris & Pearson, 2014). Reporting guidelines from the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) were used to describe the process of conducting a systematic review and results of the review as transparent as possible (Page et al., 2021). The review protocol was also registered on the international prospective register of systematic reviews, PROSPERO, at the beginning of the review process for transparency (https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=182884).

Eligibility Criteria

There were no restrictions on the types of study design eligible for inclusion. Quantitative and qualitative studies, commentaries, editorials, and news articles were all included. Specific inclusion criteria included the following: (1) all human population of any age in any country; (2) both peer-reviewed and grey literature published in English; (3) empirical studies that report the epidemiological evidence of transmission, mitigation, and/or adaptation of COVID-19 due to religious communities, institutions, ritual practices and/or activities; and (4) analyses that discuss COVID-19 in relation to religious practices or activities. Exposures that were considered to be eligible were practices and activities related to religious communities, New Religious Movements (or cults), and/or theology inclusively.

Articles were excluded if they were thesis dissertations, pharmacological or biochemical studies. The indiscriminate nature of the eligibility criteria was due to the concurrent and evolving nature of the pandemic. The primary outcomes prioritized in this study were the incidence, outbreak, spread, and mitigation of COVID-19, inclusively and the role of religion in this process.

Information Sources and Search Strategy

The following seven electronic databases were used for literature searches in English: ATLA Religion, BioRxiv, CINAHL, LitCOVID, MEDLINE, PsycINFO, and Web of Science. A manual search of the reference lists of included papers was also completed to investigate whether any further relevant papers have been missed. Searches were limited to English language articles, peer-reviewed, refereed publication and grey literature, and studies on human. There were no search limitations regarding the year of publication; however, the start date was set at December 01, 2019. The initial searches were conducted on June 1, 2020, and top-up searches were followed on July 22, 2020, to capture all available up-to-date evidence. Keywords that were used for searches in each database are described in Appendix 1.

Study Selection

The primary investigator (EL) developed a search protocol and used Covidence (www.covidence.org) to manage references and remove duplicates. Article screening for title/abstract (Level 1) and full text (Level 2) was done by two independent reviewers. In cases where a decision for exclusion or potential inclusion cannot be made by the title/abstract, the full text was retrieved. After completing the Level 1 screening, full text of the included articles was retrieved and further screened based on inclusion and exclusion criteria. Two reviewers independently read full text of the articles to verify eligibility and complete inclusion/exclusion checklists. During the screening process, any disagreements were resolved through a consensus discussion, and if consensus cannot be reached, the final inclusion of articles was then decided by a third reviewer. Inter-rater reliability between two reviewers was Cohen’s \(\kappa\) = 0.77 (substantial agreement) at Level 1 and Cohen’s \(\kappa\) = 0.61 (substantial agreement) at Level 2.

Data Collection Process and Data Items

Data extraction was completed using the Excel sheet to gather relevant information from included studies by two reviewers. The data extracted from all relevant studies included: bibliographic information of studies (i.e., authors and year of publication); study design (e.g., quantitative, qualitative, correspondence, editorial, research letter); research location; exposure and outcome measurements (if available); and the results reported. One researcher extracted data from all included studies then reviewed by another researcher. Discrepancies were resolved through consensus discussion. The relationships between religion and transmission, mitigation, and/or adaptation of COVID-19 indicated in each article were extracted.

Summary of Measures and Synthesis of Results

The summary of findings included design, country (geographical location), population, sample size (if available), analytic method, reported outcomes of interest, reported relationships between religion and COVID-19, and relevant inferential statistical results, if available. Conclusions of included opinion literature were grouped into statements that comment on relationships between religion and COVID-19 outcomes, and statements that make explicit policy recommendations for mitigating COVID-19 pandemic. Findings were summarized narratively in terms of the role religion has played and their implications for the decisions of governments and health care organizations in responding to COVID-19 pandemic.

Results

Study Selection

The number of studies that was included in the title/abstract screening and full text screening by language are provided in the PRISMA flowchart for study selection (Fig. 1). After removing duplicates, 542 articles were found during the initial search on June 3, 2020, then 297 more articles during the top-up search on July 23, 2020. A total of 839 articles were screened for title/abstract. Of these, 728 articles were excluded based on the eligibility criteria, leaving a total of 111 articles for full text screening. After removing 53 irrelevant articles, 58 articles in English were included in this review.

Fig. 1
figure 1

PRISMA flow chart for systematic searches

Characteristics and Epidemiological Statistics of Included Articles

As outlined in Fig. 2 which illustrates descriptive characteristics of the included articles, the most common study type among included articles was commentary (n = 12) followed by the cross-sectional design (n = 8). As for religious groups of interest, Islam was mentioned most frequently (n = 29), followed by Christianity (n = 12). In addition, mitigation (n = 26) was the most addressed role of religion in response to COVID-19, followed by adaptation (n = 20) and transmission (n = 18 ).

Fig. 2
figure 2

Descriptive characteristics of the articles included (N = 58). 1Other study designs included Letter (n = 3), Editorial (n = 3), Perspective (n = 3), Short communication (n = 1), Special section article (n = 2), Rapid communication (n = 2), Impressionistic reporting (n = 2), Original paper (n = 2), Correspondence (n = 2), Retrospective analytic epidemiology (n = 1), Case study (n = 1), Community trial (n = 1), Psychological exploration (n = 1), Brief report (n = 1), Observational study (n = 1), Preliminary report (n = 1), Philosophical exploration (n = 1), Opinion (n = 1), Review (n = 1), Qualitative study (n = 1), Policy recommendation (n = 1), Unsure (n = 1). 2Other religion included Hinduism (n = 5), Buddhism (n = 4), Maronite (n = 2), Neo‐Pentecostal Churches (n = 1), Afro-Brazilian Candomblé (n = 1), Umbanda (n = 1), Shinto (n = 1), New religions (n = 1). 3Eight out of 58 included articles addressed ≥ one role that religion plays during the early stage of the COVID-19 pandemic

In terms of epidemiological statistics, nine studies reported epidemiological statistics regarding COVID-19 in Middle East (n = 3) (Al-Rousan & Al-Najjar, 2020; Atique & Itumalla, 2020; Yezli & Khan, 2020b), South Korea (n = 3) (Choi et al., 2020; Ha, 2020; Kang, 2020), Italy (n = 1) (Chirico & Nucera, 2020), Malaysia (n = 1) (Mat et al., 2020), and South Africa (n = 1) (Jaja et al., 2020).

The epidemiological statistics reported in the Middle East were addressed between countries, rather than in one country, regarding international pilgrimage practice as a main topic. Atique and Itumalla (2020) showed the COVID-19 cases transmitted between the Kingdom of Saudi Arabia and Bahrain, indicating the confirmed case of 2,795 that were related to religious ritual traveling as of April 2020 (Atique & Itumalla, 2020). Al-Rousan and Al-Najjar (2020) reported the COVID-19 cases transmitted between Iran and Israel through Jewish pilgrimages whereby 6 confirmed cases in the beginning of March became 193 cases by March 15, 2020 (Al-Rousan & Al-Najjar, 2020).

The epidemiological statistics reported in South Korea were primarily addressed the first “super-spreader,” known as “patient 31,” who transmitted COVID-19 to many people among the Sincheonji religious group. The severity of large religious gatherings was also highlighted with statistics showing that approximately 60% of the confirmed cases nationwide were linked to Sincheonji religious group as of March 2020 (Choi et al., 2020; Kang, 2020; Kim et al., 2020). The statistics reported in Malaysia also revealed the severe impact of mass religious gatherings, of which more than 35% of COVID-19 cases were related to the mass Sri Petaling Muslim missionary gathering between February 27, 2020, and March 1, 2020 (Mat et al., 2020). In Italy, it was reported that 60 priests have died in March 2020 (Chirico & Nucera, 2020). The statistics reported in South Africa indicated that 80 people tested positive for COVID-19 after a single religious event which led to 1,600 potential cases among those who attended the event (Jaja et al., 2020). The detailed descriptive characteristics and epidemiological reporting of the included articles are displayed in Appendix 2.

Findings on Transmission

A total of 18 studies (Agley, 2020; Ali & Alharbi, 2020; Al-Rousan & Al-Najjar, 2020; Alzoubi et al., 2020; Atique & Itumalla, 2020; Capponi, 2020; Choi et al., 2020; Chukwuorji & Iorfa, 2020; Freeman et al., 2020; Hill et al., 2020; Jaja et al., 2020; Kang, 2020; Kim et al., 2020; Lan et al., 2020; Lorea, 2020; Mat et al., 2020; Shah et al., 2020; Wildman et al., 2020) have addressed religion as a cause for transmission, of which religious gatherings and practices contributed to the outbreak and spread of COVID-19. COVID-19 was predominantly spread through religious gatherings without adhering to the physical distancing recommendation. These types of gatherings included rituals (e.g., pilgrimages and funerals) and travelling to shrines (e.g., a monument to Mary, mother of Jesus and Kaaba).

Religious institutions or communities were identified as spaces where misinformation about the infection proliferated which further cultivated mistrust towards science and health care directives among religious adherents of these communities (Appendix 3). Specifically, studies mainly discussed how religious gatherings spread COVID-19 and the negative association between religiosity and trust in science and public health guidelines (Agley, 2020; Ali & Alharbi, 2020; Al-Rousan & Al-Najjar, 2020; Alzoubi et al., 2020; Atique & Itumalla, 2020; Capponi, 2020; Choi et al., 2020; Chukwuorji & Iorfa, 2020; Freeman et al., 2020; Hill et al., 2020; Jaja et al., 2020; Kang, 2020; Kim et al., 2020; Lan et al., 2020; Lorea, 2020; Mat et al., 2020; Shah et al., 2020; Wildman et al., 2020).

With respect to the association between religiosity and trust in science, and public health guidelines, Agley (2020) indicated that a higher score in religious commitment was associated with lower overall trust in science (Agley, 2020). Furthermore, Hill and colleagues (2020) demonstrated that more religious states in the USA tended to show a higher average mobility score and more public resistant to public health recommendations (Hill et al., 2020). Similarly, a study that explored the relationship between religiosity and beliefs in the COVID-19 conspiracy showed that general COVID-19 conspiracy beliefs were positively associated with a higher level of religiosity (Freeman et al., 2020).

In summary, transmission (e.g., outbreak, spread) of COVID-19 has been enacted mainly through religious gatherings and practices. Furthermore, proliferated misinformation on COVID-19 within religious communities and mistrust based on misinformation were attributable to COVID-19 transmission.

Findings on Mitigation

Twenty-six studies reported on the mitigating role of religion during the early stage of COVID-19 (Ahmed & Memish, 2020; Al-Rousan & Al-Najjar, 2020; Ali & Alharbi, 2020; Atique & Itumalla, 2020; Crubézy & Telmon, 2020; Ebrahim & Memish, 2020a, 2020b; Escher, 2020; Frei-Landau, 2020; Gautret et al., 2020; Ha, 2020; Hong & Handal, 2020; Iqbal et al., 2020; Kim et al., 2020; McCloskey, et al., 2020a, 2020b; Memish et al., 2020; Muurlink & Taylor-Robinson, 2020; Quadri, 2020; Tarimo & Wu, 2020; Waitzberg et al., 2020; Weinberger-Litman et al., 2020; Wildman et al., 2020; Wong et al., 2020; Yezli & Khan, 2020a, 2020b) (Appendix 3).

These articles mainly discussed an urgent need to cancel rÏeligious gatherings and events to mitigate the transmission and outbreak of COVID-19, even though they can be understood as a significant opportunity for its believers. These articles also highlighted the importance of institutional and intersectoral collaborative work among science, religion, and government to prevent and control the spread of COVID-19 (Hashmi et al., 2020; Hong & Handal, 2020). It was also reported that several countries (e.g., South Korea and Italy) have enacted national laws that ban religious gatherings and mandated testing and quarantining of suspected individuals with COVID-19 to prevent further spread of the virus (Chirico & Nucera, 2020; Kim et al., 2020).

In summary, cancelling religious gatherings and events was discussed as a main COVID-19 mitigation strategy that various religious communities have already implemented. Furthermore, collaborative work with science and government was addressed as a potential mitigation strategy.

Findings on Adaptation

Adaptation as a role of religion during the early stage of COVID-19 was addressed in 20 articles (Chirico & Nucera, 2020; Frei-Landau, 2020; Galiatsatos et al., 2020; Greene et al., 2020; Hashmi et al., 2020; Hong & Handal, 2020; Koenig, 2020a, 2020b; Lee, 2020; Lee et al., 2020; Levin, 2020; Modell & Kardia, 2020; Nahandi et al., 2020; Peteet, 2020; Prime et al., 2020; Thompkins et al., 2020; Tootee & Larijani, 2020; Umucu & Lee, 2020; Waitzberg et al., 2020; Waqar & Ghouri, 2020) (Appendix 3). These articles primarily addressed new ways of performing religious practices (e.g., online gatherings, broadcasting religious ceremonies) and religious leaders and communities’ appropriate response to COVID-19 and positive coping strategies (Koenig, 2020a, 2020b; Peteet, 2020; Umucu & Lee, 2020). Conversely, two studies explored negative religious outlooks where believers wondered whether they were abandoned by God at the time of COVID-19 (Lee, 2020; Lee et al., 2020). Supporting religious leaders and religious medical professionals who are suffering from psychological stressors during COVID-19 was also discussed in two studies (Greene et al., 2020; Nahandi et al., 2020).

In summary, studies have highlighted that religious practices and events now must be conducted in a way that is considered a “new normal” (e.g., online gatherings, broadcasting religious ceremonies).

Roles of Religion Summary

Out of 58 articles that were included in this review, eight articles addressed more than one role that religion has played during the early stage of COVID-19 (Al-Rousan & Al-Najjar, 2020; Atique & Itumalla, 2020; Frei-Landau, 2020; Hill et al., 2020; Hong & Handal, 2020; Kim et al., 2020; Waitzberg et al., 2020; Wildman et al., 2020) while two articles did not indicate any role but reported epidemiological evidence in relation to religious communities (McLaughlin, 2020; Safdar & Yasmin, 2020) (Appendix 3).

Out of 64 observations in 54 articles of which varying roles of religion were addressed, 28.1% (n = 18) were related to the detrimental role of religion such as outbreaks of COVID-19 through religious gatherings as well as mistrust/misinformation towards science and public health guidelines among religious groups. More importantly, most articles (71.9%; n = 46) have addressed the beneficial roles of religion where different religious communities have contributed to mitigating the infection and adapting safe approaches to organize religious practices. Various roles of religion during the early stage of COVID-19 are summarized in Fig. 3.

Fig. 3
figure 3

Beneficial (mitigation & adaptation) and detrimental roles (transmission) of religion during the early stage of the COVID-19 pandemic discussed in the included articles (n = 56). 1Transmission included outbreak and spread of COVID-19 and mistrust/misinformation towards science and public heath guidelines. Note: A total of 64 observations were made from 56 articles

Policy Recommendations

Findings on policy recommendations for religious groups to combat COVID-19 are summarized in Table 1. A total of 26 articles provided recommendations on controlling and managing COVID-19 (Ahmed & Memish, 2020; Al-Rousan & Al-Najjar, 2020; Atique & Itumalla, 2020; Chirico & Nucera, 2020; Crubézy & Telmon, 2020; Ebrahim & Memish, 2020a, 2020b; Escher, 2020; Gautret et al., 2020; Greene et al., 2020; Ha, 2020; Hashmi et al., 2020; Hong & Handal, 2020; Iqbal et al., 2020; Jaja et al., 2020; Kang, 2020; Koenig, 2020b; Mat et al., 2020; McCloskey, et al., 2020b; Memish et al., 2020; Quadri, 2020; Tarimo & Wu, 2020; Thompkins et al., 2020; Wong et al., 2020; Yezli & Khan, 2020a, 2020b).

Table 1 Practical recommendations to control and manage COVID-19 (n = 26)

The majority of the articles unanimously recommended that religious events and rituals should be suspended or cancelled to contribute to the safety of communities (Ahmed & Memish, 2020; Atique & Itumalla, 2020; Crubézy & Telmon, 2020; Ebrahim & Memish, 2020a, 2020b; Kang, 2020; Mat et al., 2020; McCloskey, et al., 2020a; Memish et al., 2020; Quadri, 2020; Tarimo & Wu, 2020; Yezli & Khan, 2020a). Similarly, three articles suggested to promote religious gatherings and rituals in accordance with newly implemented travel restrictions (Al-Rousan & Al-Najjar, 2020; Gautret et al., 2020; Jaja et al., 2020). Furthermore, two articles specifically recommended and addressed the importance of a collaborative approach among religious communities, science, healthcare providers, and policymakers (Hashmi et al., 2020; Hong & Handal, 2020).

All in all, policy recommendations in response to COVID-19 were in line with the mitigation and adaptation roles of religion found in this review, of which primarily included cancelling religious gatherings and events to mitigate transmission and collaborating with science and government to develop effective strategies for both mitigation and adaptation to COVID-19 and subsequent lockdowns and restrictions.

Discussion

Roles of Religion During the Early Stage of COVID-19

This was the first systematic review summarizing the role of religious communities in the transmission, mitigation, and adaptation during the early stage of COVID-19 pandemic. There is no doubt that several religious gatherings and practices have accelerated the transmission of the COVID-19 virus and endangered people around the world. Having said that, religion has played an important role in mitigating the infection and its impacts as well as helping people to cope with trauma during COVID-19 crisis. According to previous studies, religious beliefs and practices can positively influence individuals’ psychological well-being by helping them relieve psychological stress and cope with trauma not only during COVID-19 but also during many other unprecedented times such as pandemic and/or disasters (e.g., terrorists attacks) (Blevins et al., 2019; Peteet, 2020; Pugh, 2010; Schuster et al., 2001; Umucu & Lee, 2020).

Religion has acted as an important platform for intersectoral collaboration with science and government to combat COVID-19 as shown in the findings of our review on mitigation and adaptation. During the early stage of COVID-19, various religious institutions have collaborated with science sector and government authorities to innovate new measures of continuing religious commitments and rituals through social networks, TV channels, or live streaming (Capponi, 2020; Frei-Landau, 2020). These new innovative measures following public health information have been effectively implemented by religious leaders as some religious believers tend to have more faith in religious leaders than science or public health guidelines (Kim et al., 2020; Quadri, 2020; Weinberger-Litman et al., 2020). This clearly demonstrates how powerful religious leaders can be in delivering public health messages and highlights the importance of collaborating with religious sectors when facing public health crises.

All in all, despite the harmful impacts on COVID-19 by certain religious groups, religious communities have been serving as a critical source for managing and controlling COVID-19 in multiple regions of the world while taking collaborative approaches with other sectors.

COVID-19, Religion, and Vaccine Hesitancy

In December 2020, the first COVID-19 vaccine, Pfizer, rolled out, mainly in high income countries, which gave the global population hope that the pandemic will finally be under control, given that vaccine is considered the most promising strategy for eradicating the pandemic (Fisher et al., 2020). However, vaccine hesitancy which is defined as a “delay in acceptance or refusal of vaccination despite availability of vaccination services” (MacDonald et al., 2015, p. 4163) has been reported around the world and served as a main challenge in achieving community immunity. Historically, vaccination has been challenged for religious, scientific, and political reasons (Larson et al., 2014) and COVID-19 vaccination rollout has not been an exception.

Vaccine hesitancy due to religious reasons (e.g., false claims around religious permissibility of the vaccine or “infidel vaccine”) is prevalent. According to a cross-sectional study on COVID-19 vaccine acceptance with 2,058 Chinese respondents in March 2020 (Wang et al., 2020), 52.2% of respondents reported that they would be willing to get vaccinated as soon as the vaccine is available while the remainder would delay the vaccination until the safety of the vaccination is verified and confirmed. A similar survey was conducted among 991 U.S. adults in April 2020 and showed that 57.6% of participants would be willing to take the COVID-19 vaccine, while the remaining 42.4% of the respondents reported that they were either not sure about getting vaccinated (31.6%) or had no intention to be vaccinated (10.8%) (Fisher et al., 2020). Compared to the surveys which have been conducted in the U.S. and China, survey results in Saudi Arabia represented a slightly higher percentage of vaccine hesitancy where more than half of the survey respondents (55.3%, 1,715 out of 3,101) were hesitant to accept the COVID-19 vaccination (Magadmi & Kamel, 2020).

One of the potential solutions to vaccine hesitancy is involving religious authorities in health awareness and vaccine promotion as they tend to have a powerful voice to their religious believers (Kim et al., 2020; Quadri, 2020; Weinberger-Litman et al., 2020). For example, in December 2020, The British Board of Scholars and Imams, a national board of Muslim, and other professional scholars made a statement that the COVID-19 vaccine is religiously permissible even though it contains haram ingredients or gelatine that Muslim people are obligated to avoid, as long as there are no medical alternatives (The British Board of Scholars & Imams, 2020). Similarly, the Catholic Church announced that it is “morally acceptable” to receive the COVID-19 vaccine, which was endorsed by Pope Francis, even though the vaccine development process included using cell lines from aborted fetuses (Ladaria Ferrer, 2020). These statements coming from religious authorities are the examples of promoting COVID-19 vaccination while neutralizing false conspiracy theories against the vaccination. Therefore, if the vaccine hesitancy is related to certain religious beliefs, working with religious scholars and leaders would be an effective strategy as they could serve as trusted messengers to their religious groups.

Religion and Previous Health Crises

Historically, religion has played a significant role in both threatening and improving public health during public health crises such as Ebola virus epidemic and the global HIV/AIDS epidemic (Blevins et al., 2019; Pargament et al., 2004; Pugh, 2010; VanderWeele, 2017). Before COVID-19, the Ebola virus disease was one of the most recent deadly epidemics that affected the West African region mainly in Guinea, Liberia, and Sierra Leone from December 2013 to June 2016. It caused 11,325 deaths with 40% of case fatality rate (Bell et al., 2016). Specifically, at the beginning of the epidemic, religious gatherings and practices that involved washing the body during burial practices accelerated the transmission of the Ebola virus, which is known to transmit through blood and bodily fluids. Furthermore, religious leaders refusing to adhere to public health guidelines imparted their understanding of the Ebola virus to their believers (Reichler et al., 2018). In response to this situation, the World Health Organization and several religious organizations such as the Catholic Agency for Overseas Development, Catholic Relief Services, and international faith-based organizations developed and disseminated a new protocol in November 2014 with the help of religious leaders, specifically with Muslim and Christian burial rituals and successfully controlled the epidemic by reducing cases in half (6,383 new cases in October 2014 whereas 3883 in November and 3060 in December) (Bell et al., 2016).

A similar impact of religion can be found with the HIV/AIDS epidemic. On the detrimental side, some religious groups have considered AIDS as a punishment for sins of homosexuality and/or adultery which, in turn, also made people with HIV/AIDS face great social stigma. On the beneficial side, religion has positively influenced psychological well-being including anxiety, depression, and quality of life among individuals who suffer from HIV/AIDS (Dalmida, Koenig, Holstad, & Thomas, 2015; Pargament et al., 2004; VanderWeele, 2017). Furthermore, religion has been a key provider for HIV prevention, education, care, and support services over the past three decades (Blevins et al., 2019; VanderWeele, 2017). For instance, in Sub-Saharan Africa, one of the largest HIV support providers are faith-based organizations (U.S. President’s Emergency Plan for AIDS Relief, 2015). In addition, in the late 1980s, various religious groups such as the Episcopal Church and Catholic Church started to cooperate with public health authorities to provide HIV/AIDS care and raise awareness (VanderWeele, 2017). All in all, the examples of previous epidemics have indicated diverse influences of religion as a double-edged sword when it comes to public health crises.

Religion as a Social Determinant of Health and Intersectionality

Religion as a social determinant of health has been largely overlooked and understudied (Kawachi, 2020; Ransome, 2020). According to the Public Health Agency of Canada (PHAC), social determinants of health include income and social status; social support networks; education; employment/working conditions; social environments; physical environments; personal health practices and coping skills; healthy child development; gender; and culture (Public Health Agency of Canada, 2016). Although religion is not mentioned as a social determinant of health in the PHAC report (2016), religion is encompassed in PHAC's conceptualization of social support networks presumably (Public Health Agency of Canada, 2016).

Our review demonstrated that religion plays a significant role in spreading as well as containing COVID-19, while potentially improving the health of religious population groups. This evidently indicates that religion is a definite social determinant of health and, thus, it is important to take religion into account when addressing public health issues. When social determinants of health including religion are addressed during public health crises such as COVID-19 pandemic, there are certain population groups that may need further attention, such as women, people of color, low-income families/individuals, or individuals at the intersection of these social identity variables (e.g., low-income, women of color). This is because when social determinants of health are interwoven with each other and jointly influence health, consequences can be more detrimental to their health.

The findings of our review indicated that culturally marginalized religious individuals experience religious stereotypes and stigma during COVID-19 which, in turn, influence their psychological health, thereby adding another layer of trauma to already overburdened individuals (Hashmi et al., 2020; Iqbal et al., 2020; Weinberger-Litman et al., 2020). For instance, such may be the case for some Muslim communities in North America, whose existence is at the nexus of racial and religious minorities. As evidently shown in our review, out of 10 studies that have provided epidemiological data on the outbreak and transmission of COVID-19, seven studies pertained to minoritized religious communities. Similar patterns were observed in the media where COVID-19 related outbreaks and transmission were more frequently reported in the minoritized faith communities globally (Jelowicki, 2020; Rahim, 2020; Wilson, 2020). Therefore, religion as a social determinant of health should be unquestionably but carefully addressed in the context of public health during COVID-19 pandemic.

Overall Summary

Religious groups have both accelerated and mitigated the spread of COVID-19 during the early stage of COVID-19 era. However, there are lessons to be learned from religious communities’ endeavors to help people respond to and cope with COVID-19 and prevent further religious-related outbreaks and spread. Most importantly, as the pandemic has not yet been eradicated, reconciliation between the practice of religious gatherings and public health guidelines, and a collaborative and pragmatic approach among religious communities, science, and government are critical to combat the COVID-19 crisis (Hashmi et al., 2020; Hong & Handal, 2020).

This review summarized the literature addressing the varying roles of religion at the early stage of COVID-19 pandemic. Given that it only captures the roles of religion during the early stage of COVID-19 as the last search of literature was done in July 2020. A follow-up systematic review is warranted to further examine the roles of religion during the later stage of COVID-19. Furthermore, risk of bias for each article included in this review was not assessed given the emergency of the pandemic and to include all relevant literature available at the time of literature searches.

Conclusion

This review summarized the literature addressing the varying roles of religion at the early stage of the COVID-19 pandemic. However, it only captures the roles of religion during the early stage of COVID-19, as the last search of this literature was completed in July 2020 and it did not include, for example, the work of 'chaplains' (e.g., ‘hospital chaplain' or similar titles) who were undertaking duties on behalf of their religious organizations. A follow-up systematic review is warranted to further examine the roles of religion during the later stage of COVID-19. Furthermore, risk of bias for each article included in this review was not assessed given the emergency of the pandemic and to include all relevant literature immediately available at the time of literature searches. Understanding religion as a determinant of the transmission, mitigation, and/or adaptation of COVID-19 in the early stage is essential for collectively achieving success to end the pandemic. This review has provided information on religion and COVID-19 that can be used to develop pragmatic models and policies for future crises. As the pandemic has not yet been eradicated, there is an urgent need for further rigorous research on the role of religious communities during this time of COVID-19.

Studies on adaptation strategies that could be in place immediately are warranted to provide adequate and timely support for people when the COVID-19 pandemic is resolved as well as in preparation for future pandemics. Furthermore, as this review is focused on the roles of religious communities during the early stage of COVID-19, further research on how the roles have changed over time and how this alteration affected the transmission, mitigation, and/or adaptation of COVID-19 is needed.