Journal of Parasitic Diseases

, Volume 42, Issue 2, pp 171–176 | Cite as

Spatial distribution of Giardia lamblia infection among general population in Mazandaran Province, north of Iran

  • Abolghasem Siyadatpanah
  • Mehdi Sharif
  • Ahmad Daryani
  • Shahabeddin Sarvi
  • Mohammad Hasan Kohansal
  • Saeed Barzegari
  • Abdol Sattar Pagheh
  • Shirzad Gholami
Original Article


Giardia lamblia is the most prevalent intestinal parasites of humans in Iran and other in the world although information on geographical distribution of giardiasis plays significant role in identifying communities at high risk, little attention has been paid to study human giardiasis using geographical information system. Therefore, the aim of the current study was to determine temporal and spatial patterns of human giardiasis distribution to identify possible high risk areas and seasons in northern Iran. A total of 4788 people referred to health centers in the Mazandaran Province of northern Iran were surveyed January to December 2015. From each person stool sample and questionnaire with socio-demographic data were collected. Giardia infection was diagnosed using direct wet mount, formalin ether concentration and trichrome staining. The results were analyzed using Moran Local Indicators of spatial association and geographically weighted regression. The overall prevalence of Giardia infection was 4.6% (222/4788), and was significantly higher among those aged 5–9 years compared to their older peers (P < 0.0001). Our data showed a significant dependency between the prevalence of G. lamblia and age, job, residence, season and height from the sea (P < 0.0001). The results of this study provided a precise and specific spatial and temporal pattern of human giardiasis distribution in the Mazandaran Province, Iran. These evidences should be considered for proper control of disease decisions and strategies.


Giardiasis Geographical information system Infectious disease Iran 



The authors wish to thank Vice Chancellors of Research of Mazandaran University of Medical Sciences for financial support and all health centers staffs (Grant No. 1031 and Code of Ethics License: IR.mazums.REC.94.1031).

Compliance with ethical standards

Conflict of interest

All authors declare that they have no conflict of interest.


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Copyright information

© Indian Society for Parasitology 2018

Authors and Affiliations

  • Abolghasem Siyadatpanah
    • 1
    • 2
  • Mehdi Sharif
    • 2
    • 3
  • Ahmad Daryani
    • 2
    • 4
  • Shahabeddin Sarvi
    • 2
    • 4
  • Mohammad Hasan Kohansal
    • 5
  • Saeed Barzegari
    • 6
    • 7
  • Abdol Sattar Pagheh
    • 1
    • 2
  • Shirzad Gholami
    • 2
    • 4
  1. 1.Student Research Committee, Faculty of MedicineMazandaran University of Medical SciencesSariIran
  2. 2.Toxoplasmosis Research CenterMazandaran University of Medical SciencesSariIran
  3. 3.Department of Parasitology, Medical School, Sari BranchIslamic Azad UniversitySariIran
  4. 4.Department of Parasitology and Mycology, School of MedicineMazandaran University of Medical ScienceSariIran
  5. 5.Department of Parasitology and Mycology, School of MedicineZanjan University of Medical ScienceZanjanIran
  6. 6.Amol Faculty of Paramedical SciencesMazandaran University of Medical SciencesSariIran
  7. 7.Department of Health Information Technology, Amol Faculty of Paramedical SciencesMazandaran University of Medical SciencesSariIran

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