Persons can be with a std.Logical formLearned from4 sentences. Sexual partners may be counselled about a possibility of acquiring a std.Logical formLearned from4 sentences. Stds may facilitate transmission.Logical formLearned from4 sentences. Counseling can be for stds.Logical formLearned from4 sentences. A (std clinic) can be dedicated.Logical formLearned from4 sentences. An increase can be in a spread of stds.Logical formLearned from4 sentences. A std may specify a standard (time zone).Logical formLearned from4 sentences. Chlamydias can be a std.Logical formLearned from4 sentences. Persons may have a std.Logical formLearned from4 sentences. An epidemic can be constituted-of-or-filled-with stds.Logical formLearned from4 sentences. A std can be in a country.Logical formLearned from3 sentences. A std can be untreated.Logical formLearned from3 sentences. Stds may undergo a treatment.Logical formLearned from3 sentences. A link can be between stds.Logical formLearned from3 sentences. (Birth control pills) may protect a person from stds.Logical formLearned from3 sentences.