Even in the remote Faroe Islands, some children have high levels of perfluorinated compounds in their blood. The chemicals may interfere with the immune system.
January 24, 2012 Researchers found that children whose blood contained high levels of chemicals used in nonstick coatings and stain-resistant fabrics were less responsive to vaccination. The finding suggests, but doesn't prove, that these chemicals may make some children more vulnerable to infectious diseases.
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A rendering of a key protein the simian immunodeficiency virus uses to reproduce.
January 6, 2012 The vaccine protected 80 percent of monkeys from infection with SIV, the simian version of HIV. By comparison, an experimental HIV vaccine was 31 percent effective in protecting people against infection in a large-scale study unveiled in 2009.
December 8, 2011 A test of a nasal vaccine against norovirus suggests it may be possible to immunize people against the virus, a common cause of foodborne illness.
Michele Pereira, who questions the schedule of mandatory vaccines, sat with her daughters, Evangeline, 6, right, and Genevieve, 2, at a park in Ashland, Ore., earlier this month.
November 28, 2011 The majority of pediatricians are okay with delaying childhood vaccines if parents ask to do that, according to a new survey. But they still overwhelmingly support vaccines and the current schedule, which requires 25 vaccines before age 2.
Women in developing countries, such as Cote D'Ivoire, may soon have access to vaccines against HPV and rubella.
November 17, 2011 About 88 percent of cervical cancer deaths occur in developing countries. The deaths can be prevented by an HPV vaccine, which will be available to some women for the first time in 2012.
November 7, 2011 As an alternative to vaccinations, a Tennessee woman offered lollipops smeared with chickenpox virus. Health officials said that the chickenpox vaccine is much safer, and that mailing pathogens is both illegal and dangerous.
What's in this vial changes from year to year, but the process of creating the flu vaccine remains pretty constant.
October 25, 2011 The flu vaccine has proven itself for most people, but researchers say it needs an overhaul to further reduce infection and death rates. Many doctors would like to see a universal vaccine that protects against all strains of flu.
October 25, 2011 Experts voted to recommend to the Centers for Disease Control and Prevention that all 11- and 12-year-old boys be vaccinated with Gardasil, Merck's vaccine against human papillomavirus. Vaccinations could start as early as age 9.
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A Haitian protester in Port-au-Prince last month spray-paints a wall, equating the UN mission in Haiti (abbreviated here as MINISTA) with cholera.
October 20, 2011 The goal of the vaccinators isn't to stop cholera in its tracks. They can't do that in Haiti with only enough vaccine for 100,000 people. The aim is to show the world that vaccination against the illness can be done.
A mother held her baby as she received an experimental malaria vaccine at the Walter Reed Project Research Center in Kombewa in Western Kenya in Oct. 2009.
October 18, 2011 Several thousand young African children who got three doses of the experimental vaccine had about 55 percent less risk of getting malaria over a year than those who got a control vaccine against rabies or meningitis.
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October 17, 2011 When office costs are factored in, doctors lose money about half the time on common immunizations, a new analysis finds. Vaccine storage and personnel costs are often overlooked.
October 14, 2011 Attitudes toward vaccination, as expressed on Twitter, help researchers track whether or not people are getting their flu shots.
October 3, 2011 Of the parents who don't follow the recommended timing for vaccinations, most refused only some immunizations — those against flu were ditched most frequently.
University of Miami pediatrician Judith L. Schaechter gives an HPV vaccination to a 13-year-old girl last week in Miami.
Joe Raedle/Getty Images
September 29, 2011 An NPR-Thomson Reuters Health Poll finds 21 percent of Americans believe autism is linked to vaccines. Most people believe vaccines work. Among those with concerns about vaccines, uncertainty about long-term health effects is the biggest fear.
A nurse vaccinates a child against pneumonia at a healthcare center in Managua in January. Nicaragua received pneumococcal vaccines from the GAVI Alliance.
ELMER MARTINEZ/AFP/Getty Images
September 27, 2011 The GAVI Alliance will introduce the rotavirus vaccine, which protects against diarrhea, in 16 developing countries. Some 18 countries will also get the pneumococcal vaccine, which could cut deaths from pneumonia and meningitis.
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