Avian influenza A(H5N1) virus is a highly pathogenic strain that poses a significant risk to workers on dairy farms. A study conducted by the Vaccine Research Center at the University of Pittsburgh, led by Valerie Le Sage, has provided convincing evidence of this risk. The research found that the H5N1 virus remains infectious on milking equipment materials for several hours, increasing the risk of transmission to humans through contaminated surfaces during milking.
In response to the HPAI-H5N1 virus epidemic in multiple American states, the researchers conducted laboratory experiments to test the persistence of avian influenza A(H5N1) and human influenza A(H1N1) viruses on milking equipment. The results showed that both viruses remain infectious on milking equipment materials for several hours, highlighting the risk of transmission of the H5N1 virus to humans through contaminated surfaces during milking.
The study also raises concerns about the potential for the H5N1 virus to adapt to humans and evolve within their bodies, potentially becoming transmissible from person to person. To reduce the spread of the H5N1 virus from dairy cows to humans, the researchers recommend implementing personal protective equipment such as masks, visors, and other eye protection among workers during milking. Additionally, sanitizing rubber liners used in the milking process after milking each cow could help reduce the spread of the virus among animals and curb the current epidemic.
Overall, this study highlights the importance of taking precautions when working with dairy cows infected with highly pathogenic avian influenza (H5N1) virus. By implementing appropriate measures such as personal protective equipment and sanitization procedures, workers can minimize their risk of infection and prevent further spread of this dangerous disease.
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