Outbreak of Puumala Virus Infection, Sweden

Abstract

An unexpected and large outbreak of Puumala virus infection in Sweden resulted in 313 nephropathia epidemica patients/100,000 persons in Västerbotten County during 2007. An increase in the rodent population, milder weather, and less snow cover probably contributed to the outbreak.

Keywords

• Hantavirus
• hemorrhagic fever with renal syndrome
• outbreak
• Sweden
• Puumala virus
• climate