An outbreak of leptospirosis in Lezhi County, China in 2010 may possibly be linked to rainfall.

A total of 26 leptospirosis cases occurred in the outbreak,of whom six died after hospitalization.All26 patients were clinically diagnosed as leptospirosis.Microscopic agglutination test(MAT)revealed that13 of 26 patients were affected with laboratory confirmed leptospirosis.Furthermore,MAT data suggested that serogroup Icterohaemorrhagiae were the main pathogens responsible for this outbreak.And the rainfall data suggested that the increased rainfall might be responsible for the leptospirosis outbreak in Lezhi County.This outbreak has reminded us that leptospirosis should not be neglected,especially during flood season,although its incidence rate is low.