Volume 18, Number 10—October 2012
Dispatch
Influenza A(H1N1)pdm09 Virus in Pigs, Réunion Island
Eric Cardinale1
, Hervé Pascalis1, Sarah Temmam2, Séverine Hervé2, Aure Saulnier, Magali Turpin, Nicolas Barbier, Johny Hoarau, Stéphane Quéguiner, Stéphane Gorin, Coralie Foray, Matthieu Roger, Vincent Porphyre, Paul André, Thierry Thomas, Xavier de Lamballerie, Koussay Dellagi, and Gaëlle Simon
, Hervé Pascalis1, Sarah Temmam2, Séverine Hervé2, Aure Saulnier, Magali Turpin, Nicolas Barbier, Johny Hoarau, Stéphane Quéguiner, Stéphane Gorin, Coralie Foray, Matthieu Roger, Vincent Porphyre, Paul André, Thierry Thomas, Xavier de Lamballerie, Koussay Dellagi, and Gaëlle SimonTable 2
Seroprevalence rates for influenza A viruses among fattening pigs as determined by ELISA and HI testing, Reunion Island, 2010 and 2011*
| 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.
