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The agency also released a chart to explain when you need a mask if you re fully vaccinated or not.
Now, the right-hand column (for fully vaccinated people) is green all the way down. People who have waited two weeks after both shots of a Pfizer or Moderna vaccine, or after a single Johnson & Johnson vaccine, can now do everything on the list without a mask, according to the CDC.
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Researchers surveyed more than 31,000 people about their health
Almost a third reported symptoms usually associated with concussion
This includes headaches, dizziness, anxiety, insomnia and loss of concentration
Researchers say that stress and lack of sleep are likely causing the symptoms
Findings could help doctors figure out which symptoms are due to head injuries, and which have other causes