While birds are the usual carriers and spreaders of bird flu, occasionally humans can also catch the virus, generally after direct unprotected contact with infected live or dead birds. This is referred to as avian influenza A virus infections in humans Bird Flu when it occurs. Sustained human-to-human transmission of these viruses has been very limited and inefficient. https://www.coherentmarketinsights.com/industry-reports/global-bird-flu-market