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  • Title: Role of maternally derived circulating antibodies in protection of neonatal swine against porcine group A rotavirus.
    Author: Ward LA, Rich ED, Besser TE.
    Journal: J Infect Dis; 1996 Aug; 174(2):276-82. PubMed ID: 8699055.
    Abstract:
    The ability of maternally derived antibodies in the circulation of neonatal pigs to protect against challenge with virulent porcine group A rotavirus (OSU strain) was evaluated. Groups of neonatal pigs with nondetectable (group 1), low (group 2), or high (group 3) serum levels of OSU rotavirus-specific maternally derived antibodies were challenged with virulent OSU rotavirus at 3 days of age and monitored for infection and disease. Control pigs were sham-inoculated with diluent at 3 days of age. Although all virus-inoculated pigs shed rotavirus and developed diarrhea, group 3 pigs developed significantly less severe diarrhea and shed for significantly fewer days than group 1 and 2 pigs, and they maintained appetites and weight gains comparable to sham-inoculated controls. It was concluded that circulating maternally derived antibodies play a significant role in mitigating clinical disease following rotavirus infection in neonatal swine and that the protection afforded by these antibodies is titer dependent.
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