Dutch authorities reported a new outbreak of bird flu at a poultry farm, but could not say if it was the worrying new strain detected elsewhere in the country.
The United States' top public health agency revealed Friday a series of alarming incidents in which dangerous biological agents including anthrax, influenza and botulism were mishandled over the past decade.
A US-based Japanese scientist said he has succeeded in engineering a version of the so-called swine flu virus that would be able to evade the human immune system.
A new kind of bird flu has been detected for the first time in Adelie penguins in Antarctica, though the virus does not seem to make them sick, researchers said.
China has reportedly downgraded H7N9 bird flu in humans, dropping its description as "infectious" in new guidelines on how to deal with the disease, even as new cases spike with the onset of winter.
Vietnam has recorded its first death from bird flu in nine months, according to the country's Health Ministry, amid growing regional concerns over a potential resurgence of the deadly virus.
An H1N1 flu outbreak in Alberta has sickened nearly 1,000 people and killed five, the Canadian province's health minister said Friday, urging everyone to get vaccinated.
The flu vaccine is generally less effective for men than for women, scientists said in a study Monday, tracing the effect to higher levels of testosterone that curb the immune response.
A 73-year-old Chinese woman has died of a type of bird flu new in humans, health officials say, but experts believe the risk of it spreading between people is low.
At least 11 people have been killed in an outbreak of H1N1 flu virus in northern Chile, where the rate of infection is more than six times higher than the rest of the country.
A study in England has strengthened evidence from Scandinavia that a vaccine used to prevent pandemic flu boosted the risk of sleep disorder among teens and children.