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Whether a small cut with a knife, a surgical wound or a major injury caused by a fall the body's defense and repair system leaps into action and tries to close the wound as quickly as possible.

Researchers have developed a promising new approach to vaccination for rotavirus, a common cause of severe diarrheal disease that is responsible for approximately 500,000 deaths among children in the developing world every year.

The National Institutes of Health (NIH) has awarded $10 million to the Georgia Institute of Technology, Emory University and PATH, a Seattle-based nonprofit organization, to advance a technology for the painless, self-administration of flu vaccine using patches containing tiny microneedles that dissolve into the skin.