No, that is not correct. The "95%" number from the vaccine trials is the efficacy and actually represents the reduction in the probability of developing COVID if you are vaccinated and exposed to the virus when compared to someone who was not vaccinated. The "95%" number means your probability of developing COVID if exposed is reduced by 20x if you were vaccinated when compared to someone who is not vaccinated. The efficacy is essentially the ratio of the number of positives cases among the test group and the number of positive cases among the control group. During the Pfizer trial, the breakthrough percentage of the test group was about 0.02%. The recent CDC reported breakthrough numbers are about 0.008% for the fully vaccinated.
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Originally Posted by Hifred
Those who are not vaccinated are supposed to wear masks. I was at an activity in one of the rec centers when a person who was not wearing a mask said to the group, "I need to have more patience with people telling me I need to get vaccinated." Then she went on about not believing in vaccinations. All non vaccinated people need to wear a mask. This is why. No vaccine is 100% including the measles vaccine. There are different Covid vaccines and the best is 95% effective. That means theoretically 5 out of 100 people if exposed will still have a breakthrough infection. What protects those 5 is that the people around them if vaccinated are not spreading the illness. For example there was a measles outbreak in the U.S. between 1989 - early 1991 due to a rise in anti vaccination sentiment. There were 27,000 cases of measles in the U.S. in the year 1990 alone with approximately 123 preschoolers dying. If someone doesn't want to take the vaccine then they need to be aware they can carry and spread the virus even if they are not experiencing symptoms. Hence, the reason they need to wear a mask.
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