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6. HPV vaccine (Human Papillomavirus)

How you get it: A series of three shots

How often and when: Preferably at ages 11 or 12, but older teens and young adults can get it, too. You get the second shot 1 to 2 months after the first. The third shot comes 6 months after the first.

Who should get it? Young women and some men up to age 26 who didn't get it as preteens or teenagers. It’s best to get it before you first have sex.

7. MMR vaccine (Measles, Mumps, Rubella) Vaccine

How you get it: In a shot that protects against the three viruses

How often and when: You getone injection, in some cases followed by a booster at least 4 weeks later.

Who should get it? Adults who were born after 1957, haven’t had measles, mumps, or rubella, and don’t have any immunity to them. Because this vaccine is made with live viruses, you should not get it while you are pregnant. If you are planning ahead, get the shot at least 4 weeks before you get pregnant.

8. Varicella (Chickenpox) Vaccine

How you get it: By injection

How often and when: You can get it any time, in two doses 4-8 weeks apart.

Who should get it? Healthy adults who aren’t pregnant, haven't had chickenpox before, and aren’t immune to the virus. This vaccine is made with live viruses, so you shouldn’t get it if you have a weak immune system because of a disease (like cancer or HIV) or medical treatments (like steroids or chemotherapy).

9. Meningococcal Vaccine

How you get it: By injection

How often and when: Most people get the first shot at age 11 or 12, with a booster at 16 and when a doctor recommends one.

Who should get it? Adults who haven't had the vaccine should get it if they:

  • Are a college freshman living in a dorm
  • Are a military recruit
  • Have a damaged spleen or have had their spleen removed
  • Have an immune system problem that puts you at risk for bacterial infection
  • Work a lot with the bacteria that cause meningitis
  • Travel to or live in countries where the disease is common