Gene behavior distinguishes viral from bacterial infections
New approach could gauge response to flu vaccine
![Flu virus and MRSA bacteria](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/12225_ls_virus-bacteria_free.jpg?fit=860%2C460&ssl=1)
CASING A CULPRIT Certain gene behavior changes in people can reveal whether an infection is caused by a virus, such as the H1N1 influenza virus (left), or bacteria, such as methicillin-resistant Staphylococcus aureus, or MRSA (right).
NIAID/Flickr (CC BY 2.0)