Individuals can be with stds.Logical formLearned from6 sentences. Stds can be a problem.Logical formLearned from6 sentences. (Std rates) can be high.Logical formLearned from6 sentences. Stds can be prevalent.Logical formLearned from6 sentences. Infection can be with stds.Logical formLearned from6 sentences. Stds can be ulcerative.Logical formLearned from5 sentences. Wounds may increase chances of contracting stds.Logical formLearned from5 sentences. Stds can be transmitted.Logical formLearned from5 sentences. Some tests can be for stds.Logical formLearned from5 sentences. Stds may be diagnosed.Logical formLearned from5 sentences. Strains can be constituted-of-or-filled-with stds.Logical formLearned from5 sentences. A (std prevalence) can be high.Logical formLearned from5 sentences. Diagnostic tests can be for stds.Logical formLearned from5 sentences. Knowledge can be about stds.Logical formLearned from5 sentences. Some stds may be treated.Logical formLearned from5 sentences.