First Domestic Case of Human Infection with Novel Influenza A (H7 Subtype) Identified as H7N7; Patient Released from Isolation and Discharged
The Centers for Disease Control (hereafter referred to as CDC) announced today (the 3rd) that the first domestically confirmed human case of infection with a novel Influenza A virus of the H7 subtype has shown continuous clinical improvement after treatment. The patient has tested negative in consecutive tests and was released from isolation today and discharged to continue recovery at home. Relevant contacts will continue health monitoring until April 6.
The CDC stated that genetic sequencing of a sputum sample collected from the patient on March 27 identified the virus as H7N7 influenza. This strain is classified as a low pathogenic avian influenza (LPAI) virus. No antiviral resistance mutations were detected, and the virus remains sensitive to antiviral medications. The public is advised not to panic. The CDC also reported the case to the World Health Organization (WHO) today through the International Health Regulations (IHR) contact window, marking Taiwan’s first domestic case of novel H7N7 influenza.
According to the CDC, more than 90 human cases of H7N7 have been reported globally since 1959, mostly before 2003 and primarily in Europe. Only one death has been recorded, and most cases presented as mild conjunctivitis. In 2013, Italy reported three additional cases, also mild conjunctivitis. No new human cases have been reported since then, although the virus continues to circulate and evolve in birds. Genetic analysis of this case shows significant differences from the H7 strains found in European human cases 10–20 years ago, and is most similar to H7 strains previously detected in wild birds in Taiwan. No mutations associated with increased human transmissibility were identified, suggesting this is a sporadic event and that the overall risk is controllable.
The CDC reminds poultry and livestock workers to comply with disease prevention measures, including wearing protective equipment and disinfecting after work. Anyone experiencing respiratory or eye symptoms should seek medical attention promptly and proactively disclose any history of animal contact. The public is also advised to follow the “5 Do’s and 6 Don’ts” principle, avoid contact with or purchase of poultry and livestock products from unknown sources, and work together to maintain public health safety.
For more information, please visit the CDC website(https://www.cdc.gov.tw/) or call the epidemic prevention hotline at 1922
Data URL link: https://www.cdc.gov.tw/Bulletin/Detail/oWFPJ8DnGZKl-Ygm43iPQQ?typeid=9