molecular epidemiology of chicken anemia virus in nigeria.between february 2002 and may 2004, chicken anemia virus (cav) was detected by pcr in organ samples from 14 flocks of poultry farms in lagos, ogun and oyo states in southwestern nigeria. the farms reported low (<5%) to high mortalities (up to 100%) with various lesions at necropsy. the complete vp1 gene of 30 of these positive strains was sequenced. strains that diverged by up to 4.4% on a nucleotide level differed only by up to 2.5% at the amino acid level (7 aa) as a result of clustered silent ...200616096706
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