evidence: Do Vaccines Cause SIDS, Multiple Sclerosis, or Other Problems? There are concerns, many of which circulate on the Internet, linking some vaccines to multiple sclerosis, sudden infant death syndrome (SIDS), and other problems. To date, studies have not shown any connection between vaccines and these conditions. SIDS cases have actually dropped by more than 50% in recent years, while the number of vaccines given yearly continues to rise. [...] And talk with your doctor about which vaccines your kids need. Working together, you can help keep your family healthy.