Scientists cautiously optimistic about HIV vaccine candidate

“I would say that we are pleased with these data so far, but we have to interpret the data cautiously,” said study co-author Dr. Dan H. Barouch, a principal investigator on the study, a professor of medicine at Harvard Medical School and the director of the Center for Virology and Vaccine Research. “We have to acknowledge that developing an HIV vaccine is an unprecedented challenge, and we will not know for sure whether this vaccine will protect humans.” [CNN article]