The National Network for Immunization Information (NNii) provides up-to-date, science-based information to healthcare professionals, the media, and the public: everyone who needs to know the facts about vaccines and immunization.
Vaccine Safety
Should My Child Receive the Measles, Mumps, and Rubella Vaccines Individually Rather Than as a Combination?
Some media reports have said that parents should not use the MMR vaccine but have their children immunized against measles, mumps and rubella one at a time (i.e., on three separate occasions, as long as one year apart). This is a potentially dangerous advice that increases a child's risk of being needlessly harmed by serious diseases that can be effectively and safely prevented.
Thimerosal-Mercury
Mercury in Vaccines
This article answers the most frequently asked questions about thimerosal and its use as a preservative in vaccines.
News
Updates
Emergence of Avian Influenza A(H7N9) Virus Causing Severe Human Illness — China, February–April 2013
Posted: May 6, 2013
Progress Toward Eradication of Polio — Worldwide, January 2011–March 2013
Posted: May 3, 2013