Screening of Feral Pigeon (Colomba livia), Mallard (Anas platyrhynchos) and Graylag Goose (Anser anser) Populations for Campylobacter spp., Salmonella spp., Avian Influenza Virus and Avian Paramyxovirus |
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Authors: | A Lillehaug C Monceyron Jonassen B Bergsj? M Hofshagen J Tharaldsen LL Nesse and K Handeland |
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Institution: | (1) Section for Wildlife Diseases, National Veterinary Institute, Oslo, Norway;(2) Section for Virology and Serology, National Veterinary Institute, Oslo, Norway;(3) Section for Bacteriology, National Veterinary Institute, Oslo, Norway;(4) Norwegian Zoonosis Centre, National Veterinary Institute, Oslo, Norway; |
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Abstract: | A total of 119 fresh faecal samples were collected from graylag geese migrating northwards in April. Also, cloacal swabs were
taken from 100 carcasses of graylag geese shot during the hunting season in August. In addition, samples were taken from 200
feral pigeons and five mallards. The cultivation of bacteria detected Campylobacter jejuni jejuni in six of the pigeons, and in one of the mallards. Salmonella diarizona 14:k:z53 was detected in one graylag goose, while all pigeons and mallards were negative for salmonellae. No avian paramyxovirus
was found in any of the samples tested. One mallard, from an Oslo river, was influenza A virus positive, confirmed by RT-PCR
and by inoculation of embryonated eggs. The isolate termed A/Duck/Norway/1/03 was found to be of H3N8 type based on sequence
analyses of the hemagglutinin and neuraminidase segments, and serological tests. This is the first time an avian influenza
virus has been isolated in Norway. The study demonstrates that the wild bird species examined may constitute a reservoir for
important bird pathogens and zoonotic agents in Norway. |
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