Global seroprevalence of scrub typhus: a systematic review and meta-analysis

Author:

Dasgupta Sauvik,Asish Purushothaman Rajamani,Rachel Gladys,Bagepally Bhavani Shankara,Chethrapilly Purushothaman Girish Kumar

Abstract

AbstractScrub typhus, a neglected disease, is a significant health concern in the Tsutsugamushi triangle of the Asia–Pacific and has raised global concerns due to recent cases occurring outside this region. To estimate the global prevalence of scrub typhus, we conducted a systematic review and meta-analysis. We conducted a systematic search of PubMed, Scopus, and Embase databases for observational studies on scrub typhus. Using a random-effects model, we combined the prevalence estimates with inverse-variance weights while also evaluating heterogeneity and publication bias. Among 3551 reports screened, we identified 181 studies with 1,48,251 samples for inclusion in our synthesis. The overall pooled seroprevalence (95% confidence intervals) of scrub typhus infections was 24.93% (23.27–26.60). Gender-wise pooled prevalence was estimated to be 50.23% (47.05–53.40) for males and 48.84% (45.87–51.80) for females. Eschar prevalence was observed to be 30.34% (22.54–38.15) among the positive cases. One-fourth of all the samples tested positive for scrub typhus and eschar was present in one-third of these total positive cases, encompassing regions beyond the Tsutsugamushi triangle. This estimation underlines the importance of this neglected disease as a public health problem. Strengthening surveillance and implementing disease control measures are needed in the affected regions.

Publisher

Springer Science and Business Media LLC

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