Hantavirus surveillance for China.
China hosts the largest hantavirus burden globally, primarily Hantaan and Seoul viruses. Surveillance is most active in Henan, Shaanxi and Heilongjiang provinces, with strong seasonal patterns tied to agricultural cycles.
Active surveillance. China historically reported the world's highest HFRS case counts (up to 100,000+ annually at peak). Vaccination programs and rodent control have reduced this substantially, though tens of thousands of cases continue annually.
The dominant hantavirus species in China is Hantaan. See the strain reference for detail on transmission, mortality and reservoir biology.