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Abstract The H5N1 avian influenza virus continues to evolve into genetically diverse and highly pathogenic clades with increased potential for cross-species transmission . Recent scientific advances have included the development of next-generation vaccine platforms , promising antiviral compounds , and more sensitive diagnostic tools , alongside strengthened surveillance systems in both animals and humans. However, persistent structural challenges hinder global readiness. Vaccine production is heavily concentrated in high-income countries, limiting equitable access during potential pandemics. Economic and logistical barriers complicate the implementation of control strategies such as vaccination, culling, and compensation schemes. Gaps in international coordination , public communication, and standardization of protocols further exacerbate vulnerabilities. Although sustained human-to-human transmission has not been documented, the severity of confirmed infections and the rapid global s...

  PHNOM PENH, June 29 (Xinhua) -- A 46-year-old Cambodian mother and her 16-year-old son have been confirmed positive for H5N1 human avian influenza, bringing the total number of cases to 10 so far this year, the Ministry of Health said in a statement on Sunday. Both victims live in Lbeuk village of Puok district in northwest Siem Reap province. "According to queries, there were sick and dead poultry at the patients' home and their neighbors' homes as well as in the village, and the patients had been in contact with sick and dead chickens and cooked them for food," it added. Health authorities are looking into the source of the infection and are examining any suspected cases or people who have been in contact with the victims in order to prevent an outbreak in the community. Tamiflu (oseltamivir), an antiviral drug to prevent the bird flu from spreading, was also given out to people who had direct contact with the patients, the statement said. So far this year, the ki...

Abstract Clade 2.3.4.4b H5N1 high pathogenicity avian influenza virus (HPAIV) continues to pose a significant global threat , affecting wild and domestic avian populations, and mammalian species . In early 2024, H5N1 HPAIV was detected in dairy cattle in the United States of America, where it has continued to circulate, with sporadic detections also reported in other ruminant species . The detection of high viral loads in milk from infected cattle, has resulted in several human infections , underscoring the zoonotic potential of these viruses. In response, several countries have intensified surveillance in non-avian species to evaluate the potential for undetected viral circulation in captive mammals. In Great Britain, bulk milk tank testing of cattle and targeted surveillance of captive mammalian species on an infected premises is undertaken in accordance with the outcome of a rapid risk assessment undertaken to determine the epidemiological links between the poultry and captive mamma...