As corona virus covid19 grabbed everybody’s attention, you we should know what is a virus and vaccines.
Virus is a non living microscopic parasites, it needs a host cell to reproduce more, and sometimes destroy host cell in process and takes over the host’s immune system, and badly impact the immune system.
There are several different types of vaccines. Each type is designed to teach your immune system how to fight off certain kinds of germs — and the serious diseases they cause.
When scientists create vaccines, they consider:
How your immune system responds to the germ
Who needs to be vaccinated against the germ
The best technology or approach to create the vaccine
Based on a number of these factors, scientists decide which type of vaccine they will make. There are 4 main types of vaccines:
Live-attenuated vaccines
Inactivated vaccines
Subunit, recombinant, polysaccharide, and conjugate vaccines
Toxoid vaccines
Currently the Pfizer emergency use authorization is for people aged 16 and older. Moderna’s is for people 18 and older, though the company has recently begun testing its vaccine in 12- to 17-year-olds. If is mostly effective on new strain of coronavirus found in UK.
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