appreciated
The risks are not established unfortunately. They probably are very low: 500 cases in 500 million doses would indeed be low -- but they are not established and they do exist.
Will have to agree to disagree. Adverse events are reported via yellow card system and the risks calculated from this. I don't accept your claims that the risks are not established. I do accept that their are risks of adverse events, but these are insignificant compared to the natural adverse effects of measles. This has been well documented and reported. (I actually expect that the side effects of measles is probably underreported as over 90% of cases now come from developing countries.) The vaccine has been used safely for years. The risk of adverse events is well documented and reported and the information to support this is widely available.
for starters...
Safety and Immunogenicity of Concurrent LAIV (FluMist ) with Measles-Mumps-Rubella (MMR II) and Varicella (VARIVAX ) Vaccines in Infants 12 to 15 Months of Age
Nolan T, Bernstein D, Block S, Hilty M, Keyserling H, Marchant C, Yogev R, Cho I, Mendelman P
Pediatrics, 2008, 121(3):508-16.
Safety and immunogenicity of a combined live attenuated measles, mumps, rubella, and varicella vaccine (MMR(II)V) in healthy children.
Watson BM, Laufer DS, Kuter BJ, Staehle B, White CJ, Starr SE
1996