Tag: pfizer vaccine

covid-19 vaccines effectiveness

COVID-19 vaccines efficacy: Is it realistic to expect 100% effectiveness?

Medical science has made extraordinary progress over the last few decades, with achievements that have led to an increase in general life expectancy and quality of life. Today, afflictions such as cancer, severe heart failure, polio, or tuberculosis have modern and effective treatments.
COVID-19 after vaccination

COVID-19 after vaccination: How much does vaccination protect us?

Why can vaccinated people still get COVID-19 or even die from the disease?