Abstract
Leptospirosis is a neglected infectious zoonotic disease that affects domestic animals and wildlife as well as humans. Although leptospirosis is known as an endemic disease in Iran, there is no accurate information on the overall prevalence of this disease in humans and animals. The aim of this systematic review and meta-analysis was to estimate the seroprevalence of leptospirosis among human and domestic and wild animals in Iran. A systematic review of English and Persian articles (since 1998 to December 2017) was conducted using Google Scholar, Medline/PubMed, Science Direct, Scopus, Web of science and Iranian databases Iranmedex, Scientific Information Database (SID), Magiran, and IRANDOC. Search terms include leptospirosis, Leptospira, serology, seroprevalence, seroepidemiology, serological, Iran, cow, goat, sheep, camel, dog, cat, equine, donkey, horse, mule and rodent. In Eventually 66 articles were selected to analyze based on inclusion criteria. Seroprevalence of leptospirosis in human was 27.84% (95% CI: 13.22–22.47) and 19.71% (95% CI: 6.78–32.65%) based on ELISA and MAT, respectively. The pooled prevalence of leptospirosis in cow, sheep, goat and camel was 26.62% (95% CI: 18.76–34.48), 17.38% (95% CI: 13.32–21.43), 12.18% (95% CI: 9.96–14.41) and 22.68% (95% CI: 18.97–26.40), respectively. The prevalence of leptospirosis in horse, donkey, and mule was 19.99% (95% CI: 13.32–26.68), 40.59% (95% CI: 33.20–47.97) and 9.10% (95% CI: 2.90–15.30), respectively. The prevalence in dog and cat were estimated 14.63% (95% CI: 3.49–25.77) and 14.44% (95% CI: 3.25–25.65), respectively. The prevalence of seropositivity in rodents was estimated 20.96% (95% CI: 10.62–31.30). This study is a very comprehensive report on the status of leptospirosis in Iran. Based on our results, leptospirosis has considerable seroprevalence among human and animals in Iran. This high seroprevalence of leptospirosis showed should be given more attention for this disease in Iran and thus health measures must be taken to diagnosis, control and prevent it.
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