Abstract
Parainfluenza virus type 3 (PIV-3) can infect a wide variety of mammals including humans, domestic animals, and wild animals. In the present study, bovine parainfluenza virus type 3 (BPIV-3) was isolated from nasal swabs of Egyptian cattle presenting with clinical signs of mild pneumonia. The virus was isolated in Madin-Darby bovine kidney (MDBK) cells and confirmed by reverse transcription-polymerase chain reaction (RT-PCR). The complete genome of Egyptian BPIV-3 strain was sequenced by using next generation (Illumina) sequencing. The new isolate classified with genotype A of BPIV-3 and was closely related to the Chinese NM09 strain (JQ063064). Subsequently in 2015–16, a molecular surveillance study was undertaken by collecting and testing samples from cattle and buffaloes with respiratory tract infections. The survey revealed a higher rate of BPIV-3 infection in cattle than in buffaloes. The infection was inversely proportional to the age of the animals and to warm weather. This report should form a basis for further molecular studies on animal viruses in Egypt.
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