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  • Title: Egg transmission of avian adenovirus-associated virus and CELO virus during a naturally occurring infection.
    Author: Dawson GJ, Yates VJ, Chang PW, Orsi LN, Pronovost AD.
    Journal: Am J Vet Res; 1979 Nov; 40(11):1624-7. PubMed ID: 230761.
    Abstract:
    Both avian adenovirus-associated virus (A-AV) and CELO virus were isolated from the embryonating eggs of 25-week-old black sex-linked hens during a naturally occurring infection. In the first 7 days of egg collection, A-AV was isolated from 10 of 43 (23.2%) embryonating eggs, and CELO virus was isolated from 8 of 43 (18.6%) embryonating eggs. Both viruses were isolated from six eggs. In the next 16 days of egg collection, A-AV and CELO virus were coisolated from 1 of 127 (0.8%) eggs; all other samples were negative for both viruses. All six hens transmitting A-AV to eggs and 5 of 6 hens transmitting CELO virus showed seroconversions (fourfold increase in antibody concentrations). Viruses were not isolated from eggs after the hens showed a fourfold increase in antibody concentrations.
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