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PFSI010 ››› Weeks 1–4 Weeks 5–8 Weeks 9–12 Weeks 13–16 Weeks 17–20 Weeks 21–24 • Timing: 10–13 weeks • Blood test plus NT ultrasound exam • Screens for Down • syndrome and trisomy 18 First-trimester screening Second-trimester screening (“quad screen”) • Timing: 15–22 weeks • Blood test • Screens for Down syndrome, trisomy 13, trisomy 18, and NTDs Standard ultrasound exam • Timing: 18–22 weeks • Screens for some physical defects Integrated screening and sequential screening • Timing: 10–22 weeks • Combines first-trimester and second-trimester screening test results in vari...


12.
September 2016

FAQ054, September 2016

What is genital herpes? Genital herpes is a sexually transmitted infection (STI). It is caused by a virus called herpes simplex virus (HSV). Infection with HSV can cause painful sores and blisters around the lips, genitals, or anus. Sometimes, infection with HSV causes no sores. It is possible to have HSV and not know it. There is no cure, but the infection can be managed.


13.
November 2015

FAQ190, November 2015

What is human papillomavirus (HPV)? Human papillomavirus (HPV) is a virus. Like all viruses, HPV causes infection by entering cells. Once inside a cell, HPV takes control of the cell’s internal machinery and uses it to make copies of itself. These copies then infect other nearby cells.


FAQ189, October 2015

What is influenza (the flu)? Influenza (the flu) is more than a bad cold. It usually comes on suddenly. Signs and symptoms may include fever, headache, fatigue, muscle aches, coughing, and sore throat. It can lead to complications, such as pneumonia. Some complications can be life-threatening.


FAQ088, September 2015

What is the vulva? The external female genital area is called the vulva. The outer folds of skin are called the labia majora and the inner folds are called the labia minora.


FAQ077, September 2015

What is pelvic inflammatory disease (PID)? Pelvic inflammatory disease (PID) is an infection of the female reproductive organs. It is a common illness. PID is diagnosed in more than 1 million women each year in the United States.


PFS005, August 2015

Human immunodeficiency virus (HIV) is the virus that causes acquired immunodeficiency syndrome (AIDS). HIV can enter the bloodstream through contact with an infected person’s body fluids, such as blood or semen. This can happen during sex or by sharing needles used to inject drugs. An infected woman who is pregnant can pass the virus to her baby. Women with HIV who breastfeed also can pass the virus to their babies. Once in the blood, HIV attacks the immune system. As the immune system weakens, the body becomes less able to resist disease and other infections. AIDS is diagnosed when a perso...


FAQ050, May 2015

How do urinary tract infections (UTIs) develop? Most urinary tract infections start in the lower urinary tract, which is made up of the urethra and bladder. Bacteria from the bowel live on the skin near the anus or in the vagina. These bacteria can spread and enter the urinary tract through the urethra. If they move up the urethra, they may cause a bladder infection (called cystitis). Bacteria that have infected the bladder may travel to the upper urinary tract, the ureters and the kidneys. An infection of the kidneys is called pyelonephritis. An upper urinary tract infection may cause a mor...


Pregnancy Periods Sexuality and Relationships 10. Have safe and healthy relationships with a boyfriend or girlfriend. 11. Know when a relationship is threatening or harmful. 12. Talk about lesbian, gay, bisexual, and transgender (LGBT) topics. 13. Think things through before you have sex for the first time. 14. Learn about safe sex. 15. Get birth control so you can choose to become pregnant when the time is right for you. 16. Plan ahead for a safe and healthy pregnancy. 17. Get tested for pregnancy. 18. Know what your options are if you become pregnant. 19. Protect yourself fr...


FAQ093, November 2013

What are hepatitis B and hepatitis C infections? Hepatitis B and hepatitis C are serious infections that affect the liver. Both diseases are contagious and caused by viruses. Both can lead to serious, long-term illness.


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