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.
CITATION STYLE
Pettersson, L., Boman, J., Juto, P., Evander, M., & Ahlm, C. (2008). Outbreak of Puumala virus infection, Sweden. Emerging Infectious Diseases, 14(5), 808–810. https://doi.org/10.3201/eid1405.071124
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