Epidemiological investigation of a death case infection with H9N2 avian influenza and HIV in Guizhou Province, China, 2021

Background: To be aware of infection combining the avian influenza H9N2 virus with human immunodeficiency virus (HIV) increases the risk of the disease. Through epidemiological investigation, a better grasp of the pathogenetic process and possible sources of infection. Diagnostic criteria and laboratory tests were used to confirm the pathogen. Case Description: This patient was diagnosed with avian influenza H9N2 subtype and HIV infection according to diagnostic criteria. Environmental daub swab of two live poultry markets showed H9 positive. His family members were not detected with HIV and H9 subtype. The patient died from an H9N2 virus infection with HIV under specialists’ consultation. Conclusion: The diagnostic capability of H9N2 and Acquired Immune Deficiency Syndrome (AIDS) in primary care should be noticed and improved. Infection with the H9N2 virus and HIV should be paid more attention to prevent public health events.