The Joint Committee on Vaccination and Immunisation (JCVI) has recently recommended a booster shot of the Covid-19 vaccine. This is because a third dose of the vaccine would reportedly “top up the immunity in those whose protection had likely waned since they completed their first round of shots earlier in the year.”
As a result, Covid-19 booster shots will be offered to all people aged over 50, and those at greatest risk of the disease.
Seeing as more than 75% of UK adults are now double-jabbed, some may wonder why people might need a third dose.
Why might I need a booster vaccine?
It is important to understand that vaccines help protect people against dangerous viruses and bacterias, however a vaccine may not necessarily keep a person entirely safe from these illnesses.
Covid-19 is not the only disease people need another shot to build immunity from. This is because many vaccines’ protection may wear off over time.
Viruses are notorious for changing and mutating over time — and Covid-19 has been a prime example of this — seeing as half of the world is now suffering from the Delta variant.
This is where a booster dose of a vaccine comes in handy; it allows the body to build its immunity yet again, helping it ward off infection.
Booster vaccine doses have been given to both adults and babies for several decades to protect against various viruses and diseases including Hepatitis A, Measles and Tetanus.
Being vaccinated against Covid-19 protects people against serious illness from the virus, however the vaccine does lose its effectiveness over time, just like other jabs.
Research has shown that mRNA vaccines like Pfizer and Moderna start to lose some of their power against infection and serious illness after several months.
In the United States, the government has rolled out booster shots to immunocompromised individuals during the summer of 2021.
Meanwhile, the UK’s Joint Committee on Vaccination and Immunisation in September 2021 suggested booster shots for adults over 50 years, as well as at-risk groups.
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