Opinion | Evolving threat of ‘pink eye’ H5N1 bird flu: Could it spread globally?
Summary
The H5N1 bird flu virus, traditionally transmitted from birds, is now showing evidence of spreading through cattle exposure, causing 'pink eye' symptoms in humans, raising concerns about global spread and surveillance needs.
Key Points
- H5N1 bird flu has a high case fatality rate of approximately 50 percent and was first detected in Nepal in 2009 on poultry farms.
- Recent US cases show a shift in transmission to humans through exposure to infected cattle and raw milk, with 'pink eye' as a prominent symptom.
- Nepal faces a new wave of H5N1 outbreaks in poultry and wild birds, with concerns about human transmission and the need for expanded surveillance.
- No vaccine currently exists for H5N1; antiviral treatment with Oseltamivir shows clinical benefit, highlighting the virus's pandemic potential and evolving transmission routes.
