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Fourth vaccine dose boosts antibodies, researchers say, but likely not enough to prevent Omicron breakthrough infections

By Jacqueline Howard, CNN Early data out of Israel suggests that a fourth dose of either the Pfizer/BioNTech or Moderna coronavirus vaccine can bring an increase in antibodies — more than what’s been seen after a third dose — but it still might not be enough to protect against breakthrough infections caused by the Omicron

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Tonga volcano eruption likely not large enough to affect global climate, experts say

By Rachel Ramirez and Brandon Miller, CNN Though massive volcanoes have the potential to affect global temperatures and weather, the eruption near Tonga on Saturday was likely not large enough to impact global climate, experts tell CNN. The Hunga-Tonga-Hunga-Ha’apai eruption on Saturday was enormous; likely the largest in 30 years, according to experts. It injected

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The CDC updated its mask guidelines. What to know about ‘the highest level of protection’

By Kristen Rogers, Parija Kavilanz and Amanda Sealy, CNN The US Centers for Disease Control and Prevention has changed its mask guidelines to recommend that people “wear the most protective mask you can that fits well and that you will wear consistently.” The agency describes well-fitting respirators approved by the National Institute of Occupational Safety

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CDC urges Americans to wear most-protective mask or respirator that fits well and that they’ll wear consistently

By Katherine Dillinger and John Bonifield, CNN The US Centers for Disease Control and Prevention updated its mask information for the American public on Friday, including clarifying that certain types of masks and respirators offer more protection from the coronavirus than others and offering tips on what consumers should look for when shopping for them.

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Many hospitals are halting nonurgent procedures and relying on the National Guard as Covid-19 hospitalizations rise

By Travis Caldwell, CNN As Covid-19 hospitalizations reach new highs, more states and health care systems are cutting back services that aren’t urgent and relying on National Guard personnel to fill staffing gaps as infected health care employees miss work to recover and patient demand grows. While officials have started to call out very early

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