The WHO has described it as a seasonal respiratory infection, with symptoms ranging from fever and cough to body aches, sore throat and congestion.

Changes in the key antigenic regions of H3N2 viruses suggest that the upcoming flu season may require closer attention to ...

Ahead of the holiday tourist rush, city health officials in New York City reported nearly 14,000 flu cases in the first week ...

The infection caused by subclade K, a genetically distinct subgroup of influenza A (H3N2) viruses, is being referred to as ...

A mutated version of the influenza A (H3N2) strain dubbed ‘subclade K’ is spreading in the US and Canada after the UK. Some ...

A new and dangerous strain of 'super flu,' H3N2 subclade K, has driven an unprecedented rise in influenza cases weeks ahead ...

Ahead of the holiday tourist rush, city health officials in New York City reported nearly 14,000 flu cases in the first week ...

The mutation, known as subclade K, has already caused a surge in flu cases in Australia, Canada, Japan, and the U.K.

A new version of the common flu is spreading globally, and health officials are monitoring this evolving strain of influenza ...

A new influenza variant, called subclade K, has caught the attention of public health officials as cases surge at an alarming ...

Health officials are warning people about a flu virus called H3N2 that is spreading in the United States and other countries ...

A dangerous new super flu is spreading fast across the US — and it's not your typical seasonal virus. Hospitalizations are skyrocketing, schools are shutting down, and hospitals are reintroducing mask ...