Healthcare TB not a life-long infection in most people, reveals study Updated : October 28, 2019 11:33 AM IST One study showed that the treatment of people with TB immunoreactivity for one year lowered the incidence of active TB by 60 to 70 percent over the next nine years. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.