A (std treatment) can be presumptive.Logical formLearned from3 sentences. Persons can be at risk of stds.Logical formLearned from3 sentences. Some stds can be curable.Logical formLearned from3 sentences. Stds can be important.Logical formLearned from3 sentences. Stds may start.Logical formLearned from3 sentences. Stds can be among infants.Logical formLearned from3 sentences. Sections may concern stds.Logical formLearned from3 sentences. Some stds may be spreaded.Logical formLearned from3 sentences. (Or stds) may undergo a transmission.Logical formLearned from3 sentences. Stds may undergo a surveillance.Logical formLearned from3 sentences. A std can be symptomatic.Logical formLearned from3 sentences. (Std clinics) can be categorical.Logical formLearned from3 sentences. Stds can be in a group.Logical formLearned from3 sentences. Stds can be concomitant.Logical formLearned from3 sentences. Guidelines may be provided for stds.Logical formLearned from3 sentences.