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Table 2 Detection of avian influenza A H5N1 subtype from field specimens.

From: Specific detection of H5N1 avian influenza A virus in field specimens by a one-step RT-PCR assay

Sample type Source Positive by H5N1 viral isolation Positive by RT-PCR H5N1 primers n
Allantoic Fluid Vietnam 100% 100% 58
Cloacal and Tracheal swab Vietnam 100% 67% 43
Homogenized Pooled tissue and organs Vietnam and Malaysia 95% 86% 44