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A nurse prepares syringes with the Pfizer coronavirus booster vaccination on January 20 in Tokyo

Covid-19 vaccine booster effectiveness wanes after four months but still offers protection, study finds

By Jacqueline Howard, CNN Booster doses of the Pfizer/BioNTech and Moderna coronavirus vaccines are safe, and they offer high levels of protection against severe Covid-19 even though that protection can wane over time, according to two studies published by the US Centers for Disease Control and Prevention on Friday. Evidence of waning protection “reinforces the

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The US Food and Drug Administration has authorized a new monoclonal antibody treatment that seems to work against the Omicron variant of the virus that causes Covid-19.

FDA authorizes new Covid-19 monoclonal antibody that works against Omicron variant

By Jen Christensen, CNN The US Food and Drug Administration has authorized a new monoclonal antibody treatment that seems to work against the Omicron variant of the virus that causes Covid-19. Monoclonal antibodies are lab-made proteins that mimic the immune system’s ability to fight harmful pathogens like the coronavirus. Bebtelovimab, made by Eli Lilly and

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Famotidine

After hopeful early signs, study of popular heartburn drug shows mixed results against Covid-19

By Elizabeth Cohen, CNN Senior Medical Correspondent At one point at the beginning of the pandemic, there was hope that a popular and inexpensive over-the-counter heartburn drug might hold promise for treating Covid-19, but a newly published study shows mixed results. In the clinical trial, people with mild to moderate Covid-19 who took very high

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A health worker poses with a syringe with dose of a COVID-19 vaccine at the Museum of Tomorrow where adults and children between the ages of five and eleven are being vaccinated against the novel coronavirus

US plans to roll out initial 10 million Covid-19 vaccine doses for children under 5 after FDA authorization, CDC document says

By Jacqueline Howard and Nadia Kounang, CNN If the Pfizer/BioNTech coronavirus vaccine receives emergency use authorization from the US Food and Drug Administration for children 6 months to 5 years old, the tentative plan is to roll out about 10 million vaccine doses initially, according to a US Centers for Disease Control and Prevention document

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People should not delay getting a mammogram because of a recent Covid-19 vaccination

Don’t postpone mammograms because of swollen lymph nodes after Covid-19 vaccine, study says

By Carma Hassan, CNN People should not delay getting a mammogram because of a recent Covid-19 vaccination, a new study says. It’s common for mammograms to pick up swollen lymph nodes, also known as lymphadenopathy, after vaccination, said the study, published Tuesday in the journal Radiology. Swollen lymph nodes following a vaccination are a short-term,

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Man entering store with a No Mask

Covid-19 cases, hospitalizations still too high for changes to mask guidance, CDC director says

By Jacqueline Howard and Nadia Kounang, CNN The head of the US Centers for Disease Control and Prevention is standing by the agency’s mask guidelines, emphasizing Tuesday that now is not the time to change the recommendations or loosen restrictions aimed at preventing Covid-19. The CDC “still recommends that all schools encourage students to wear

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