But without treatment at this stage, it can develop into active tuberculosis, with symptoms such as a cough that lasts more ...

Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

More than 24 million people have had seasonal flu this season, according to estimates from the Centers for Disease Control ...

A Nevada dairy worker has tested positive for a newly identified strain of bird flu, sparking concerns about potential cow-to ...

Maine state officials on Tuesday reported new cases of bird flu in wild birds and urged precautions to protect chickens and other domestic birds. Avian influenza has been detected in "four Canada ...

Testing results from patients indicate that two strains of seasonal flu that are causing most illnesses — a Type A H1N1 and a ...

Bosnia has reported an outbreak of highly pathogenic H5N1 avian influenza, the World Organisation for Animal Health said on Tuesday, as a seasonal wave of the disease known as bird flu continues in ...

Yahoo News provides the latest updates on the spread of bird flu in the U.S., and its effect on rising egg prices and ...

As childhood vaccinate rates drop in the U.S. outbreaks of measles are rising. In his new book Booster Shots, Dr. Adam Ratner ...