How effective is the covid-19 vaccine?

Studies show that COVID-19 vaccines are effective at keeping you from getting COVID-19. Getting a COVID-19 vaccine will also help keep you from getting seriously ill even if you do get COVID-19. Learn more about the benefits of getting vaccinated.

How effective is the Pfizer/biontech covid-19 vaccine?

The FDA has given emergency use authorization to the Pfizer/BioNTech COVID-19 vaccine. Data has shown that the vaccine starts working soon after the first dose and has an efficacy rate of 95\% seven days after the second dose. This means that about 95\% of people who get the vaccine are protected from becoming seriously ill with the virus.

What can we learn from covid-19 mRNA vaccine clinical trials?

There are many lessons to learn from the way studies are conducted and results are presented. With the use of only RRRs, and omitting ARRs, reporting bias is introduced, which affects the interpretation of vaccine efficacy. Outcome reporting bias in COVID-19 mRNA vaccine clinical trials.

How does the immune system respond to covid-19?

When the weakened virus (viral vector) gets into your cells, it delivers genetic material from the COVID-19 virus that gives your cells instructions to make copies of the S protein. Once your cells display the S proteins on their surfaces, your immune system responds by creating antibodies and defensive white blood cells.

What is the difference between SARS-Cov-2 and covid-19 vaccines?

Firstly, in the case of the vaccines, the cells mostly break down the spike proteins into fragments. Secondly, the spike protein generated by a Covid-19 vaccine doesn’t assemble into new viral particles, unlike the spike protein from SARS-CoV-2.

Why is the spike protein in covid-19 vaccines genetically modified?

Thirdly, the spike protein in Covid-19 vaccines is genetically modified to enhance the immune response and to stop it binding to cell receptors in the same way the SARS-CoV-2 spike protein would.

Can the covid-19 vaccine cause myocarditis?

Since April 2021, there have been increased reports to the Vaccine Adverse Event Reporting System (VAERS) of cases of inflammation of the heart—called myocarditis and pericarditis—happening after mRNA COVID-19 vaccination (Pfizer-BioNTech and Moderna) in the United States.