Emergence of equine influenza virus H3Nx Florida clade 2 in Arabian racehorses in Egypt.

ABSTRACT:

Background

Equine influenza is an important cause of respiratory disease in equids. The causative virus; EIV, is highly variable and can evolve by accumulation of mutations, particularly in the haemagglutinin (HA) gene. Currently, H3N8 is the sole subtype circulating worldwide with Florida clade 1 (FC1) is most prevalent in the Americas and FC2 in Asia and Europe. In Egypt, EIV was detected in two occasions: subtype H7N7 in 1989 and subtype H3N8 (FC1) in 2008. No data is available on the circulation pattern of EIV during the last decade despite frequent observation of suspected cases.

Methods

Twenty-two nasal swabs were collected from vaccinated and non-vaccinated horses showing respiratory signs suggestive of EIV infection in 2017-18. Three additional swabs were retrieved d

SUBMITTER: Ahmed BM 

PROVIDER: S-EPMC9652821 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature