The four birds that seroconverted after inoculation with the H7N3 shorebird isolate and maintained for 63 DPI showed a slight trend toward seronegativity by bELISA; one bird (#61) was borderline seronegative with a sample/negative control (S/N) ratio of 0·50 at 63 DPI ( Figure 2 ).
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Avian influenza in shorebirds: experimental infection of ruddy turnstones (Arenaria interpres) with avian influenza virus.
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