Healthy, fortified people are unlikely to develop serious omicron infections, but the jury is out on older, at-risk populations

In a series of Twitter postsCraig Spencer, who teaches emergency medicine at Columbia University Medical Center, said every boosted patient he saw in the emergency room had no difficulty breathing or shortness of breath. Those who received two doses of the Pfizer or Moderna vaccines also exhibited mild symptoms, he said, “but more than those who received a third dose.”

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