March 12 (UPI) -- Health experts say an Australian study linking sexual activity to an infection that 1 in 3 U.S. women contract has provided a new tool to prevent recurrences, as well as find a cure. In the wake of what's being hailed as a landmark study, experts from around the world told UPI this week that they've gained a key new insight into the nature of bacterial vaginosis, although they also cautioned that finding a cure for all women will require more work. Advertisement BV is caused