If any one's interested in looking at an abstract that tries to address parents concerns about the MMR vaccine, they should go to the following address on the internet: www.aap.org/advocacy/releases/janimm.htm From there you can click on 'Pediatrics' to access the full article, which is called 'Addressing Parents' Concerns: Do Multiple Vaccines Overwhelm or Weaken the Infant's Immune System?'