Signs from a protest in 2015 against a California bill that prohibits parents from using a religious exemption as a reason to not vaccinate their children. The bill became law.
AP Photo/Rich Pedroncelli
Opposition to vaccines still prevents many children from getting needed preventative care. Understanding who is opposed, and why, can help, but the answers may surprise you.
A recent study of medical students and residents found they were reluctant to engage with parents who have vaccination fears. But listening to parents is important.
A recent study suggests that shunning parents who are reluctant to vaccinate their kids isn't the best strategy. A better strategy might be old-fashioned, but it works.
For viruses like dengue, being injected with the pathogen as in a vaccine can open the door to secondary infections.
Our immune system protects us but when it comes to some mosquito-borne disease, it can work against us. What are the implications for the development of a Zika virus vaccine?
Measles immunization campaign poster display at the Eradicate Measles Exhibit in 1972.
CDC/ Don Lovell via Public Health Image Library
When the measles vaccine was introduced, it was associated with reductions in more childhood disease deaths than were actually caused by the measles. How does that work?