作者: E. Chenais , K. Ståhl , J. Frössling , G. Blomqvist , K. Näslund
DOI: 10.1111/TBED.12195
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摘要: Summary Extensive and rapid spread of Schmallenberg virus (SBV) in Sweden was detected by consecutive serological bulk milk surveys conducted before after the vector season 2012. Whereas <0.2% cattle herds tested positive a first survey spring 2012, SBV-specific antibodies were almost 75% 723 samples randomly collected all over country 6 months later, beyond 65th northern latitude, with an observed spatial distribution suggesting multiple introductions virus. Circulation later confirmed detection SBV malformed lambs calves starting from November 2012 January 2013, respectively. These observations suggest circulation July peak transmission between August October. A local heterogeneity within-herd seroprevalence found, indicating that SBV-naive animals remain also highly infected areas enabling re-emergence infection coming season.