Study links human and canine leptospirosis patterns in China

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A new systematic review and meta-analysis in Preventive Veterinary Medicine pulls together the available evidence on human and canine leptospirosis in China, aiming to map prevalence patterns and associated risk factors across both species. The paper, published in 2026, frames leptospirosis as an ongoing One Health problem in China, where the disease is notifiable in people and remains widely distributed, with prior national surveillance showing cases reported across much of the country and a strong concentration in southern regions. Supporting literature cited alongside the review points to rainfall, seasonality, environmental exposure, and dog-related transmission dynamics as recurring themes in risk. (sciencedirect.com)

Why it matters: For veterinary professionals, the review reinforces that dogs are more than incidental hosts in leptospirosis surveillance. Recent research from China’s Yangtze River region suggests dogs may function as useful sentinels for human risk, while broader canine leptospirosis literature continues to describe dogs as both potential reservoirs and indicators of environmental contamination. That has practical implications for vaccination discussions, diagnostic suspicion in dogs with renal or hepatic signs, staff biosafety, and coordination with public health during periods of heavy rain, flooding, or regional case clustering. (pmc.ncbi.nlm.nih.gov)

What to watch: Watch for whether this review drives more standardized canine surveillance, serovar tracking, and One Health prevention planning in China, especially in high-rainfall southern provinces and along the Yangtze River corridor. (pmc.ncbi.nlm.nih.gov)