Acute virus infections of poultry : a seminar in the CEC by J B McFerran; M S McNulty; Commission of the European

By J B McFerran; M S McNulty; Commission of the European Communities. Coordination of Agricultural Research

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Additional info for Acute virus infections of poultry : a seminar in the CEC Agricultural Research Programme, held in Brussels, June 13-14, 1985

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The influence of the incubation period and the amount of antigen on the haemagglutination inhibition titres to Newcastle disease virus. Tijdschr. , 103, 104-109. J. Alexander Poultry Department Central Veterinary Laboratory New Haw, ~oleybridge, Surrey KT15 3NB. United Kingdom I CLASSIFICATION i) Paramyxoviruses Under the present system of classification the virus family PARA}r{XOVIRIDAE is divided into three genera: Mopbillivipus (measles and associated viruses), Pneumovipus (respiratory syncytial virus), Papamyxovipus.

1981). None of these strains produced plaques in chicken embryo fibroblasts in the absence of trypsin. 5* * data from Franciosi et al. (1981). 21 32 Most of the isolates were tested for their resistance to pH 4. (Table 2). 8 log. 6 log. 2 log, and the two new H6 TABLE 2 Sensitivity to pH 4 (10 minutes at 40 C)* Avian strains isolated in Italy (1965-83) turkey/Italy/1976-82 11 strains H6N2 chicken/Italy/80 HSN2 turkey/Italy/80 HSN2 turkey/Italy/80 H6N6 turkey/Italy/83 H6Nl guinea fowl/Italy/79 H6N2 H6N2 turkey/Italy/76 quail/Italy/67 HlON8 turkey/Italy/80 H6N2 turkey/Italy/77 HlON2 turkey/Italy/82 H7N2 2 strains HlON8 duck/Italy/6S HlON8 quail/Italy/7O HlON8 quail/Italy/79 More recent isolates turkey/Italy/83 H9N?

Species or type of bird from which it was 3. geographical location of isolation - country or state 4. reference number or reference name, if any 5. year of isolation. ego P}W-l/pigeon/England/561/83, P}W-8/pintail/Wakuya/20/78, P}W-3/turkey/ England/MPH/81. The first isolate of each group or designated isolates have been proposed as prototype strains for each of the serogroups. These are listed in Table 1. TABLE 1 Avian paramyxovirus isolates regarded prototype strains. P}N-l Newcastle disease virus P}W-2 chicken/California/Yucaipa/56 P}N-3 *i) turkey/Wisconsin/68 *ii) parakeet/Netherlands/449/75 P}W-4 duck/Hong Kong/D3/75 P}N-5 budgerigar/Japan/Kunitachi/75 PJ:-N-6 duck/Hong/Kong/199/77 P}W-7 dove/Tennessee/4/75 P}W-8 goose/Delaware/l053/76 P}N-9 duck/New York/22/78 Viruses under investigation as putative new serotypes: P}N-?

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