"We don’t know that two doses would be as good as three for the duration of a woman’s life or a man’s life, but it may be good enough. You really want to protect people when they’re most sexually active and most likely to have multiple partners. Then when they settle down, they’re less likely to be at risk, and it doesn’t matter as much if they’re not as protected," Dr. Levin explained.
He reported that he serves as a consultant to Merck and GlaxoSmithKline and holds intellectual property rights involving Merck’s Zostavax shingles vaccine.