Asthma and Allergy-The Revenge of the Viral Nerd?

Scientists at Johns Hopkins found the first hard evidence that viral infections can be a factor in the cause of asthma and allergies. This is been a connection that has been suspected for a long time but never confirmed. Research shows that viral infections can cause immune system B cells to produce immunoglobin E. This is a protein that causes the reactions that cause allergies and many types of asthma.

http://www.sciencedaily.com/releases/1997/02/970224105136.htm