NEWS - Taking immune cells for a test drive

You're on a crowded subway car and someone nearby sneezes. Influenza viruses shed by your fellow rider are expelled in droplets of saliva that land on you and the person next to you. Two days later, you begin suffering from the classic flu symptoms of fever, aches, and runny nose, while the lucky rider next to you somehow dodges the infectious bullet ...

http://medicalxpress.com/news/2014-03-immune-cells.htm