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Pregnant sows were immunized against colibacillosis with 3 different commercial vaccines containning K88, K99, F41, and 987P fimbriae. E. coli strains isolated from the faeces of the newborn piglets were subsequently investigated for the presence of the mentioned fimbrial adhesins by the use of hemagglutination and slide agglutination tests. LT and STa enterotoxins were determined by ELISA and inhibition...
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