Across social media, NY1 viewers submitted questions about measles after Mayor Bill de Blasio declared a public-health emergency over an outbreak that has sickened nearly 300 people, including 246 children, since it began last October.
Wednesday morning, Dr. Eric Cioe-Pena appeared on Mornings On 1 to answer a few like this one: "Do adults need to consider an MMR booster if a vaccine was received as a child?"
Watch above.
