Volume 18, Number 10—October 2012
Influenza A(H1N1)pdm09 Virus in Pigs, Réunion Island
|Time of sampling campaign (total no. farms; total no. pigs)||Antinucleoprotein ELISA
||A(H1N1)pdm09 HI test
|Herd, %||Pigs, %||Herd†, %||Pigs, %|
|June 2010 (N = 45; n = 252)||13.33||5.55||8.89||3.57|
|March 2011 (N = 33; n = 256)||48.48||28.12||42.42||16.41|
|July–August 2011 (N = 38; n = 316)||47.37||34.49||39.47||27.21|
|October 2011 (N = 33; n = 259)||57.57||40.93||42.42||22.01|
*Pigs were randomly sampled at the slaughterhouse during 4 campaigns. Seroprevalence rates are % farms positive at the herd level among all farms (N) and % pigs positive at the animal level among all animals (n). HI, hemagglutination inhibition.
†Within-herd prevalence of infected pigs ranged from 3% to 23%.
1These authors contributed equally to this article.
2These authors contributed equally to this article.