NEW YORK - Young U.S. adults with health insurance is less likely than their uninsured complements to have the sexually transmitted disease Chlamydia, a national study shows.

Chlamydia is the most ordinary bacterial STD in the U.S., with teenagers and young adults at greatest risk. The infectivity frequently causes no symptoms, but in women it could lead to long-term complications like pelvic inflammation and infertility.

Young people with health insurance, say the authors of the novel study, might be more likely to get regular show and treatment with antibiotics, which will also keep them from spreading the infection. They might also just be more aware of Chlamydia and how to lower their risk.

Of the more than 9,300 18- to 27-year-olds in the recent study, those who time after time had health insurance during the past year had a lower prevalence of Chlamydia.