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Fig. 1 | BMC Veterinary Research

Fig. 1

From: Analysis of geographic location and pathways for influenza A virus infection of commercial upland game bird and conventional poultry farms in the United States of America

Fig. 1

Distribution of historical monthly IAV introductions in United States poultry from 1980 to 2017 in the commercial raised-for-release upland game bird industry and combined conventional poultry industries including meat (chicken and turkey) and egg laying (laying chickens, pullets, breeder chickens, breeder turkeys) birds. Seasonal production activities of the commercial raised-for-release upland game bird industry are shown in boxes above the graph

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