Detection of antibodies against Avian influenza virus subtypes H7 and H9 among veterinarians in Guangdong province, China

Zoonotic transmission of pathogenic avian influenza virus (AIV) is a potential public health threat ([1][1], [2][2]), as the virus may acquire human-to-human transmissibility through mutations or by reassortment with seasonal influenza viruses (e.g., H3N2 and H1N1). The recent outbreak of novel H7N9