US President Joe Biden received a Covid-19 vaccine booster on Monday and told Americans still resisting the shots that they are damaging the country.
Biden rolled up his left sleeve in the White House and got a third Pfizer dose in line with the recently approved health guidance, which allows boosters for those 65 or older."I know it doesn't look like it, but I am over 65," Biden, 78, joked.
Today I got my COVID-19 booster shot—and just like my first and second dose, it was safe and easy.Get vaccinated. Together, can we save lives and beat this virus. pic.twitter.com/gtNAQqmOoj
— Joe Biden (@JoeBiden) September 27, 2021
Also eligible for boosters are adults with high-risk medical conditions and those in jobs where they are frequently exposed to the virus.
Frequently Asked Questions
A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.
There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.
Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
But the problem, Biden said, is that a significant chunk of Americans continue to refuse even one shot of the vaccine, fueling a deadly nationwide surge of the Delta variant.
Biden said 77 percent of Americans had got vaccines but this wasn't enough, with still nearly a quarter refusing.(With AP inputs)