Table 5 RT-PCR results for cattle per birth cohort on farms found to be infected from September to October 2015 in France
Birth period | No. analyses | No. positives | Proportion of positive results (% [95 CI]) |
|---|---|---|---|
< July 2008 | 201 | 0 | 0 [0 - 1.8] |
July 2008 - June 2009 | 66 | 3 | 4.5 [0.9 - 12.7] |
July 2009 - June 2010 | 89 | 6 | 6.7 [2.5 - 14.1] |
July 2010 - June 2011 | 113 | 10 | 8.8 [4.3 - 15.7] |
July 2011 - June 2012 | 177 | 24 | 13.5 [8.9 - 19.5] |
July 2012 - June 2013 | 206 | 39 | 18.9 [13.8 – 25.0] |
July 2013-September 2014 | 180 | 24 | 13.3 [8.7 – 19.2] |