Yes

vaccines.gov

Vaccines are Effective | Vaccines.gov

Vaccines work really well.

Vaccines are Effective | Vaccines.gov

Vaccines are the most effective tool we have to prevent infectious diseases.

Vaccines are Effective | Vaccines.gov

No medicine is perfect, of course, but most childhood vaccines produce immunity about 90 - 100% of the time.

thechart.blogs.cnn.com

Measles cases reached 15-year high in 2011 – - CNN.com Blogs

Schuchat says although many parents opt out of vaccinations for philosophical, religious or personal beliefs, the vaccine has been studied extensively and is safe and effective.

unicefusa.org

Polio Vaccinations & Childhood Immunization :: U.S. Fund for UNICEF - UNICEF USA

Polio is a crippling and sometimes fatal illness that strikes children, particularly those under the age of 5. There is no cure, but there is a safe and effective vaccine.

healthxpert.org

Measles cases reached 15-year high in 2011 | Health X Pert Articles ...

Schuchat says although many parents opt out of vaccinations for philosophical, religious or personal beliefs, the vaccine has been studied extensively and is safe and effective.

No

consumerhealth.org

Consumer Health Articles: ARE VACCINES SAFE AND EFFECTIVE?

It wasn't the vaccine.

loadsofredpills.com

Vaccines are a TOTAL MYTH and harm/kill people – the FACTS, the SCIENCE « Loads of Red Pills

There are so many studies that prove vaccines don’t work and harm people that it’s hard to miss them.