Miami Children's Hospital pediatrician Dr. Amanda Porro, M.D prepares to administer a measles vaccination to a child at the Miami Children's Hospital on Jan. 28, 2015 in Miami, Fla.
Photo by Joe Raedle/Getty

Take the vaccine quiz: It’s good for you

Updated

Vaccines were a hot topic of debate among politicians this week, with some questioning whether they should be mandatory for children and others vigorously defending their use to prevent the spread of disease. How much do you know about the history and efficacy of vaccines and the conversation around them?

New revelations have emerged regarding a letter of support the potential candidate wrote to an anti-vaccination activist in 2009.

Read more about Hillary Clinton’s response to the vaccination debate.

MSNBC Live with José Díaz-Balart, 2/3/15, 9:16 AM ET

GOP rep: Vaccinating children should be parents’ choice

José Díaz-Balart talks with Rep. Sean Duffy, R-Wisc., about the Republican pushback on President Obama’s recently-unveiled budget plan, as well his take on the vaccination debate.

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Take the vaccine quiz: It's good for you

Updated