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  1. 2022年12月21日 · What are omicron symptoms: Omicron subvariants may have different symptoms than previous Covid strains. What to look out for.

  2. 2022年9月2日 · But Pfizer's and Moderna’s new bivalent boosters target both the original strain and the BA.4 and BA.5 Omicron subvariants, which the FDA says are responsible for most cases in the U.S. and are...

  3. 2021年12月28日 · Because omicron is so contagious, it may not be around for long, and people who are fully vaccinated tend to see few symptoms, experts say.

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  5. 2022年5月4日 · Vaccines helped keep hospitalizations and deaths relatively low during the Omicron surge compared with previous variants.

  6. 2021年11月28日 · CLAIM: The World Health Organization has labeled the new strain the “omicron” variant, skipping over “nu” and “xi” without explanation. THE FACTS: The WHO on Friday gave the name ...

  7. 2021年12月4日 · With the Omicron variant of the coronavirus now dominant across the U.S., federal health officials are pleading with adults to wear masks and get a booster shot in hopes of curbing a feared surge...

  8. 2022年6月28日 · (Reuters) - The fast-spreading BA.4 and BA.5 sub-variants of Omicron are estimated to make up a combined 52% of the coronavirus cases in the United States as of June 25, the U.S. Centers for ...

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