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The Internet is full of claims that vaccines do not protect us from COVID-19. What recent evidence is there that they do?

Vaccines work even against the Delta variant, here's the proof.

It is true that the original protection rate of over 90% in the trials has not been matched by real-life experience, but that was to be expected. However, the protection is still significant. Recent data from the Centers for Disease Control (CDC) shows that among frontline workers vaccines are 66% effective even when most infections are due to the delta variant. A study published in Nature, one of the world’s most respected journals, shows that after being infected by the SARS-CoV-2 virus, people may have some protection for a year and that vaccinating these individuals substantially enhances their immune response and confers strong resistance against variants including Delta. Then we have a study from Kentucky that compared 246 individuals with laboratory-confirmed SARS-CoV-2 infection who later became re-infected with 492 controls who were originally infected but subsequently showed no signs of reinfection. Subjects who had not been vaccinated were 2.3 times more likely to be re-infected. Then we have a study from Los Angeles that examined over 43,000 cases of infection in people over the age of 16 and found that the infection rate among unvaccinated was 4.9 times greater than among the fully vaccinated, and the hospitalization rate among the unvaccinated was 29 times greater. In summary, vaccines work even against the Delta variant, they boost immunity even in people previously infected with the virus, reduce rates of re-infection, and protect people from infection in the first place. And most importantly, vaccination keeps infected people out of the hospital. Vaccines work.


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