I also believe our field can crack the vaccine challenge. We previously overcame what was once thought impossible when we developed effective viral drug therapy for the first time as a result of the AIDS crisis. However, the challenge of the HIV/AIDS preventive vaccine is more complex, but we think solvable. At our Institute of Human Virology in Baltimore, we have a vaccine candidate funded largely by the Bill & Melinda Gates Foundation and, in part, by the National Institutes of Allergies and Infectious Diseases. Similar to the success of the U.S. Army Thai trials in 2009, we are able to produce antibodies for protection in monkeys. But in too brief a time period the requisite antibodies are no longer produced. We need to make these antibodies last longer for protection because we know vaccine boosting every three months or so is not feasible or practical. Thus, we need more science advances as we progress with additional trials.