
Joe Palca
Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors. Palca is also the founder of NPR Scicommers – A science communication collective.
Palca began his journalism career in television in 1982, working as a health producer for the CBS affiliate in Washington, DC. In 1986, he left television for a seven-year stint as a print journalist, first as the Washington news editor for Nature, and then as a senior correspondent for Science Magazine.
In October 2009, Palca took a six-month leave from NPR to become science writer in residence at The Huntington Library, Art Collections, and Botanical Gardens.
Palca has won numerous awards, including the National Academies Communications Award, the Science-in-Society Award of the National Association of Science Writers, the American Chemical Society's James T. Grady-James H. Stack Award for Interpreting Chemistry for the Public, the American Association for the Advancement of Science Journalism Prize, and the Victor Cohn Prize for Excellence in Medical Writing. In 2019, Palca was elected to the American Academy of Arts and Sciences for outstanding achievement in journalism.
With Flora Lichtman, Palca is the co-author of Annoying: The Science of What Bugs Us (Wiley, 2011).
He comes to journalism from a science background, having received a Ph.D. in psychology from the University of California at Santa Cruz, where he worked on human sleep physiology.
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Over 100 million Americans have received at least one dose of a COVID-19 vaccine. That number is climbing by about 3 million daily. We hear the latest information on how well the vaccines are working.
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A study of nearly 2,300 volunteers shows Pfizer's COVID-19 vaccine appears to work in adolescents. There were 18 cases of COVID-19 in people who got a placebo and none in those who got the vaccine.
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The COVID-19 vaccine made by Pfizer and BioNtech appears to work in children as young as 12. A small study was conducted in volunteers 12 to 15 years of age.
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AstraZeneca was chastised by a committee charged with reviewing its COVID-19 vaccine study results. AstraZeneca claimed a vaccine efficacy of 79%, but the committee said that was using outdated data.
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A U.S. trial of AstraZeneca's COVID-19 vaccine may have used outdated information. A statement by the National Institutes of Health says an incomplete view of efficacy data may have been provided.
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Preliminary results from a study of AstraZeneca's COVID-19 vaccine indicates it's safe and effective. The company plans to file a request with the FDA for emergency authorization to distribute doses.
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AstraZeneca says a study of its vaccine showed an efficacy of 79% for preventing symptomatic disease. The study may meet FDA requirements for considering the vaccine for emergency-use authorization.
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Denmark has temporarily suspended giving people the AstraZeneca COVID-19 vaccine in order to investigate whether some potentially serious medical conditions are related to the vaccine.
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Exposing people to a potentially fatal disease could hasten understanding of COVID-19 and development of new vaccines and treatments. But the risks of such studies raise serious ethical questions.
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The committee voted 22 to nothing in favor of the new vaccine.