Although more than 100 people have been infected by H5N1 influenza A viruses ... type-II cells have been shown to be infected with H5N1 virus in a patient 5. Human-derived viruses that ...

Influenza virus is an infectious agent belonging to the virus family Orthomyxoviridae that causes a respiratory tract infection (influenza or 'flu') in vertebrates. There are three main species ...

In recent months, the avian influenza virus, commonly known as bird flu, has taken alarming steps toward becoming a bigger ...

This year’s surge in infections and hospitalizations appears larger than in the past, suggesting that this strain of influenza virus is “more contagious” and “more severe” than in past ...

Here's what to know. “We’ve never seen a global spread of avian influenza virus like this,” says Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the ...

Here's what we know about the flu this season: Influenza A — or flu A — are the influenza virus types responsible for most human illness and the flu season, according to the CDC. Current ...

What are the different types of influenza virus? Influenza is a respiratory illness caused by influenza viruses. It is unlike a cold that is caused by viruses that attack the nose and throat ...