The Healthy People 2020 evidence-based resources identified have been selected by subject matter experts at the U.S. Department of Health and Human Resources. Each of the selected evidence-based resources has been rated and classified according to a set of selection criteria based, in part, on publication status, publication type, and number of studies. This classification scheme does not necessarily consider all dimensions of quality, such as statistical significance, effect size (e.g., magnitude of effect), meaningfulness of effect, additional effect over control, and study design (e.g., sample size, power, internal validity, external validity, generalizability, potential biases, potential confounders).
Clinical Recommendations
The following clinical recommendations come from the US Preventive Services Task Force (USPSTF) 
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Behavioral Counseling to Prevent Sexually Transmitted Infections
The U.S. Preventive Services Task Force (USPSTF) recommends high-intensity behavioral counseling to prevent sexually transmitted infections (STIs) for all sexually active adolescents and for adults at increased risk for STIs.
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Screening for Chlamydial Infection
The U.S. Preventive Services Task Force (USPSTF) recommends screening for chlamydial infection for all pregnant women aged 24 and younger and for older pregnant women who are at increased risk.
The U.S. Preventive Services Task Force (USPSTF) recommends screening for chlamydial infection for all sexually active non-pregnant young women aged 24 and younger and for older non-pregnant women who are at increased risk.
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Screening for Gonorrhea
The U.S. Preventive Services Task Force (USPSTF) recommends that clinicians screen all sexually active women, including those who are pregnant, for gonorrhea infection if they are at increased risk for infection (that is, if they are young or have other individual or population risk factors).
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Screening for HIV
The U.S. Preventive Services Task Force (USPSTF) recommends that clinicians screen all pregnant women for HIV.
The U.S. Preventive Services Task Force (USPSTF) strongly recommends that clinicians screen for human immunodeficiency virus (HIV) all adolescents and adults at increased risk for HIV infection.
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Screening for Syphilis Infection
The U.S. Preventive Services Task Force (USPSTF) strongly recommends that clinicians screen persons at increased risk for syphilis infection.
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Screening for Syphilis Infection in Pregnancy
The U.S. Preventive Services Task Force (USPSTF) recommends that clinicians screen all pregnant women for syphilis infection.
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Consumer Information
The following consumer resources are from the Quick Guide to Healthy Living at healthfinder.gov.
Teach your kids the facts about their bodies, sex, and relationships.
Talk to a nurse, doctor, or family planning educator about your birth control options.
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