Many people vaccinated against Covid, some of them with healthy bodies (as in the case of athletes in Tokyo 2020), are infected with Covid, which for some may lead to skepticism about vaccines. However, health experts are not surprised by such a thing.
Doctors agree that vaccines do not always protect an individual from infection, but in almost all cases, they prevent someone from having severe symptoms or at least having the same symptoms as without the vaccine.
Dr. Jason Gallagher, a professor at the Temple University School of Pharmacy in Philadelphia and a specialist in infectious diseases, told Healthline that there are two reasons why we vaccinated people become infected with Covid.
"The first is the most obvious. "If a vaccine works for 90 to 95% of people, it means it does not work for 5 to 10% of them."
Gallagher said the second reason is more complicated.
"Vaccines are more effective at blocking disease than blocking infection. The infection may be mild or asymptomatic and people may not know they have it."
Vaccination provides at least one level of protection. According to the US Centers for Disease Control and Prevention (CDC), adults 65 and older who are fully vaccinated are 94% less likely to be hospitalized than people who are not vaccinated. People who are partially vaccinated are 64% less likely to be hospitalized.
Doctors say the numbers do not lie. Vaccinated people do not get so sick. In other words, vaccines provide three levels of protection:
- protection against any infection
- protection against symptomatic infection
- protection against severe symptoms
"Vaccination is never perfect, regardless of the type of vaccine. "With a small proportion of hospitalized, it is likely that most have some other health issue that lowers immunity or increases sensitivity," Dr. told Healthline. William Lang, director of the World Clinic.
