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.
Saying no to vaccines is getting harder in Washington state.
September 27, 2011 Parents who don't want to meet state immunization requirements for school now have to obtain a certificate of exemption from a licensed health care provider.
Republican presidential candidate Rep. Michele Bachmann, R-Minn., speaks during the California Republican Party Fall Convention dinner in Los Angeles.
September 22, 2011 A bioethicist says Rep. Michele Bachmann was not able to meet his challenge and produce evidence linking the HPV vaccine with mental retardation.
Trevor Reese, 13, gets his diphtheria, tetanus and pertussis booster shot from pediatric nurse practitioner Jenny Lu in Tustin, Calif., in August.
Jae C. Hong/AP
September 19, 2011 The HPV vaccine has been attracting all the controversy lately, but dozens of states mandate that teens and preteens get other vaccines. California is in the midst of getting 3 million children immunized for whooping cough in an effort to stop an outbreak there.
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September 15, 2011 Now there's money riding on Rep. Bachmann's claims that a cervical cancer vaccine is harmful. Two prominent bioethicists said they will pay more than $10,000 if claims that the HPV vaccine caused mental retardation can be proved.
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Minnesota Rep. Michele Bachmann during a Republican presidential debate Monday in Tampa, Fla.
September 13, 2011 The American Academy of Pediatrics said there is no validity to statements that a vaccine against cervical cancer is dangerous and can lead to mental retardation.
September 8, 2011 Two doses of the HPV vaccine may be enough to protect women against the virus that causes cervical cancer, according to a new study. After four years, women who had just one or two shots had the same infection rate as women who had three shots. That could increase the number of women protected.
Pharmacist Kristy Hennessee administers a vaccination against whooping cough at a Walgreen's pharmacy in Pasadena, Calif. last year.
Robyn Beck/AFP/Getty Images
August 25, 2011 Autism isn't linked to childhood vaccines, according to a new review from the Institute of Medicine, but vaccines aren't free of risks. The committee found that most serious health problems were linked to two live vaccines, the ones for measles-mumps-rubella and chickenpox. Other vaccines causes allergic reactions in some people.
The one-dose chicken pox vaccine has helped to nearly eliminate the chance of dying from the disease.
July 25, 2011 Death from chicken pox is exceedingly rare these days. But the one-dose vaccine doesn't provide lifelong protection from chicken pox, so public health experts now recommend two doses.
An Afghan health worker administers the polio vaccine to a child during a vaccination campaign in Kabul, Afghanistan, in 2010.
Majid Saeedi/Getty Images
July 25, 2011 Researchers say that anti-vaccination groups have new levels of global reach and influence, thanks in part to the Internet and social networking. The researchers are hoping to detect vaccine fears early on with a new alert system, in hopes of preventing vaccine boycotts and other problems.
Smallpox virions like these won't be destroyed for at least a few more years.
Fred Murphy and Sylvia Whitfield/CDC
May 24, 2011 The U.S. has argued supplies of smallpox virus are needed for development of better vaccines and treatments. The biggest fear is not a natural outbreak but an act of bioterrorism.
May 16, 2011 Member states of the World Health Organization are expected to decide whether to destroy the last remaining stocks of smallpox virus on the planet. A decison
Bite me: Could malaria-infected mosquitoes protect against the disease?
April 25, 2011 Coming up with vaccine against malaria has proven to be exceedingly difficult. Dutch researchers have found some small success by "vaccinating" people with mosquito bites.
April 18, 2011 Vaccine manufacturers committed to setting aside at least 10 percent of the world's flu vaccine production for developing nations when the next flu pandemic strikes. Poorer countries would either get vaccine free or pay reduced prices for it.
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