January 18, 2013 The Food and Drug Administration just approved a flu vaccine made by cells taken from the fall armyworm, an agricultural pest. The cells produce copies of a piece of the flu virus's outer coat that primes the immune system. Conventional vaccines use the whole virus and take longer to produce.
January 17, 2013 Flu viruses hijack the machinery inside animal cells to replicate. The theft is a complicated process that takes time. If the virus leaves the cells too early or too late, the risk of infection falls.
January 16, 2013 Parents will be reassured to hear there's no evidence linking the current timeline for vaccinations to health problems. A review of all available scientific data looked at a wide range of medical conditions — including diabetes, autism and epilepsy — before declaring that there's no reason to worry.
December 12, 2012 A roundup of the medical evidence by a group of independent researchers suggest that giving babies sugar water before injections can help comfort them. But the latest analysis is less enthusiastic about the approach than a previous review.
December 7, 2012 The flu is back early this season. And the Centers for Disease Control and Prevention says cases
December 5, 2012 To raise vaccination rates, some states have made it much harder for parents to get exemptions for their children from immunizations based on personal beliefs. One doctor says restrictions could backfire.
November 28, 2012 There were more than 9,000 whooping cough cases in California in 2010, a 60-year high. There has been a resurgence of the disease across the country lately. Why? People going without vaccination is one factor. Another may lie in the vaccines themselves.
November 9, 2012 An experimental vaccine for malaria reduces infants' risk of the disease by about a third. That's less than researchers had hoped for, given the vaccine's effectiveness in toddlers, but doctors say it's enough to prevent many high fevers, seizures and deaths in a lot of African children.
November 1, 2012 Although there's no cure for Ebola, scientists have been experimenting with a vaccine for years. But there's been no easy way to test it in people. A study in monkeys offers a way around this obstacle and sheds light on how the immune systems fights off the deadly virus.
October 31, 2012 To stem a widespread outbreak of mumps in Orthodox Jewish communities, public health officials tried giving children a third dose of vaccine instead of the usual two shots. The outbreak was so widespread a quarantine wasn't feasible.
October 24, 2012 We're right on the verge of wiping out polio globally. But to do that, children in remote regions of Pakistan and Afghanistan must be inoculated with the heat-sensitive vaccine — not once, but multiple times. Time to call in the donkeys.
October 22, 2012 Researchers in South Africa tracked how the evolution of the virus in two infected woman shaped the antibodies they produced to fight it. Several months after infection, the researchers saw that the patients had developed more "broadly neutralizing antibodies," which target different versions of the virus.
September 21, 2012 Pakistan is one of the last three countries to still have entrenched polio. To eradicate the virus, a group of "social mobilizers" travels to hard-hit slums to help overcome social and physical barriers to vaccination.