Leptospirosis review maps shared human and canine risk in China

Leptospirosis review maps where canine and human risk still overlaps in China

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 clarify prevalence patterns and associated risk factors across both populations. The paper searched six databases through November 11, 2025, and frames leptospirosis as an ongoing One Health challenge shaped by shared environmental exposure, free-roaming dog populations, and regional variation in climate and land use. The study arrives as broader Chinese surveillance data show human leptospirosis incidence has fallen over the past decade, but not disappeared, with a slight rebound in reported cases by 2023. (sciencedirect.com)

Why it matters: For veterinary professionals, the value here is less about a single new prevalence estimate and more about consolidation. Leptospirosis remains a zoonosis with implications for companion animal practice, public health, and local surveillance, especially in areas affected by flooding, heavy rainfall, rodent exposure, or free-roaming dog populations. Recent research from the Yangtze River region also points to meaningful canine exposure in clinic-sampled dogs, reinforcing the need to think about leptospirosis as an active surveillance issue, not just a textbook disease. (sciencedirect.com)

What to watch: Watch for whether this review drives more region-specific surveillance, vaccine strategy discussions, and cross-sector One Health monitoring in higher-risk parts of China. (pmc.ncbi.nlm.nih.gov)