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.
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.
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