A one-year-old girl in China has become the latest confirmed human case of avian influenza, as health authorities in the Western Pacific continue to track a steady, low-level stream of bird-to-human infections across the region.
The case, reported by the World Health Organization’s Western Pacific Regional Office in its Avian Influenza Weekly Update covering June 26 to July 2, 2026, involves a child from Guangdong Province, China, who developed symptoms on June 12. The infection was caused by avian influenza A(H9N2), a subtype that circulates widely in poultry and has caused sporadic human illness for years, generally with mild outcomes. The child had been exposed to a live poultry market, and no additional cases were identified among her close contacts. The update, and the case counts and risk assessments that follow, cover WHO’s Western Pacific Region specifically — one of six WHO regions worldwide — rather than the global picture, though the report does include selected global totals for context where noted.
A familiar but persistent threat
H9N2 is one of several avian influenza subtypes WHO monitors closely alongside the more lethal H5N1 and H5N6 viruses. Since 2015, the Western Pacific Region has logged 170 human H9N2 cases, the overwhelming majority in China, with only two deaths, both in patients with underlying health conditions. The virus is not considered a major pandemic threat on its own, but WHO and partner agencies continue to track every case as part of broader efforts to watch for genetic changes that could increase its transmissibility or severity.
The H9N2 case was the only new human infection reported in the region this week. No new human H5N1 cases were reported in the Western Pacific; the most recent was a case from Svay Rieng Province, Cambodia, with symptom onset back on April 15. Within the region, a cumulative 485 laboratory-confirmed human H5N1 cases have been recorded since 2003, with 320 deaths — a case fatality rate of 66%, far higher than seasonal flu or COVID-19. Globally, by contrast, WHO has tallied 1,000 H5N1 cases across 25 countries since 2003, with 479 deaths — a lower overall case fatality rate of about 48%, reflecting the wider mix of countries and circumstances involved.
No new cases were reported in the region for several other avian subtypes under surveillance, including H5N6, H3N8, H7N4, H7N9, and H10N3, and the sole known human H10N5 case remains a single infection reported in China in 2023.
Animal outbreaks continue in Australia
On the animal health side, Australia reported two new outbreaks of highly pathogenic avian influenza H5N1 in wild birds in South and Western Australia, resulting in additional bird deaths, according to data submitted to the World Organisation for Animal Health (WOAH). Outbreaks in wild bird populations are a key indicator agencies use to track the virus’s geographic spread and its potential for spillover into poultry and mammals.
WHO’s risk assessment
WHO’s regional risk assessment remains unchanged from prior weeks: the general public health risk from avian influenza A(H5) viruses in the Western Pacific is low, and no sustained human-to-human transmission has been identified there. Available evidence indicates the circulating H5 viruses have not acquired the ability to spread efficiently between people. Still, WHO describes the zoonotic threat as “elevated” given the virus’s continued spread among birds, and it recommends that member states remain vigilant and take steps to reduce human exposure to potentially infected poultry and contaminated environments.
Avian influenza remains a top-tier concern for global health security because of the viruses’ unpredictable evolutionary potential, even when regional case counts stay low. H5N1 in particular has a case fatality rate in humans that dwarfs most other circulating respiratory pathogens, and its continued spread through wild birds, poultry, and in recent years dairy cattle in the United States has raised the stakes for surveillance systems worldwide.
Sources and further reading:
Avian Influenza Weekly Update Number 1051 – WHO Western Pacific Region