HIV infects and attacks the body within days -- much faster than previously thought -- drastically narrowing the window of time when intervention is possible, Duke University researchers have found.

This means clinicians must test more and sooner if they hope to catch an infection before it can be transmitted to someone else.

"We're just going to have to be much more aggressive in identifying the infection early on," said Dr. Peter Leone, the state's HIV/AIDS health director and an associate professor in the UNC-Chapel Hill schools of medicine and public health.

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