Abstract
Background
The human immunodeficiency virus (HIV) epidemic and increasing use of immunosuppressive agents have increased the prevalence of both cryptococcosis and tuberculosis (TB). However, the status of co-infection with both pathogens remains unknown.
Methods
This study retrospectively reviewed patient records of cryptococcosis and TB co-infection from 1993 to 2006. The temporal sequence of co-infection was defined as either concurrent or sequential. Data collected included patient demographics, HIV status, co-morbidities, clinical manifestations, treatment strategies, and outcome at 1-year follow-up.
Results
There were 23 patients with cryptococcosis and TB co-infection, representing 5.4% of cryptococcosis or 0.6% of TB cases. Eleven (48%) patients were HIV-infected, and no underlying disease or immunocompromised state could be identified in six (26%) patients. Twelve (52%) patients presented with concurrent infection, but diagnosis of co-infection could be achieved simultaneously in only three (13%). Constitutional symptoms, particularly fever and weight loss, were the most common presenting symptoms, developing in more than two-thirds of the patients. The majority (83%) of the patients made a good recovery following dual antifungal and anti-TB therapy. There were three mortalities at the 1-year follow-up, which might be attributable to a delay in diagnosis and treatment of co-infection. The outcomes of HIV-infected and non-HIV-infected patients were not significantly different.
Conclusions
Cryptococcosis and TB co-infection, although rare, develops in both immunocompromised and healthy individuals. Early diagnosis and treatment may improve patient prognosis. There should be a high index of suspicion in order to achieve a timely diagnosis in a TB endemic area.
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Huang, CT., Tsai, YJ., Fan, JY. et al. Cryptococcosis and tuberculosis co-infection at a university hospital in Taiwan, 1993–2006. Infection 38, 373–379 (2010). https://doi.org/10.1007/s15010-010-0045-9
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DOI: https://doi.org/10.1007/s15010-010-0045-9