Breakthrough COVID-19 more likely months after vax: study
People who received their second dose of the Pfizer vaccine five or more months ago are more likely to test positive for COVID-19 than people who were fully vaccinated less than five months ago, new data suggest.
Israeli researchers studied nearly 34,000 fully vaccinated adults who were tested to see if they had a breakthrough case of coronavirus.
Overall, 1.8% tested positive.
At all ages, the odds of testing positive were higher when the last vaccine dose was received at least 146 days earlier, the