It is important to note that the wound itself is hardly the problem; instead, it is the possibility of exposure to infection and illness. (rochestermedicalmalpracticelawyers.net)
A genetic vulnerability may also explain why some people are affected by prenatal exposure to infections. (discovermagazine.com)
Now, a new study may explain why early exposure to infections in places like day cares seems to protect against the disease. (sciencemag.org)