Charlotte Moser, Co-Director of the Vaccine Education Center at Children's Hospital of Philadelphia, talks about measles, mumps and rubella and the vaccine that protects against them, known as MMR. She addresses common questions and discusses the relative risks and benefits of these diseases and the vaccine.   Find out: - What makes measles the most contagious disease we know - What to do if you think your child has measles - Two little-known effects measles has on a person’s immune system - Why the mumps vaccine virus is called the Jeryl Lynn strain - How scientists can use cells isolated in the 1960s to make vaccine today - Whether the rash that some people get from the vaccine is contagious - What to consider when deciding about early measles vaccination for infants - How the patterns of MMR vaccination and rates of autism provide evidence that autism is not caused by MMR vaccine To learn more about these diseases and the MMR vaccine, please visit https://bit.ly/mmr-vax. Questions? Submit the VEC Vaccine Notes form. For other vaccines, diseases or general questions about vaccines, check out https://vaccine.chop.edu. Subscribe to our Parents PACK newsletter.