| [analysis of the situation of swine influenza in the districts upper bavaria, swabia, freiburg and tübingen based on antibody profiles of piglets from bavarian breeding farms]. | a total of 1026 serum samples from 388 pigs from three bavarian rearing farms in the region of swabia were investigated in the course of investigations into the development of antibodies against influenza a virus subtypes h1n1, h1n2 and h3n2 by haemagglutination inhibition test during the period from november 2002 to february 2004. there were no signs of respiratory disease during this period. the antibody titres decreased steadily in this period which corresponds to the kinetics of maternally-d ... | 2010 | 21043147 |