Suara.com – Six recent studies have shown that people who have already contracted Covid-19 may not need to get a second dose of vaccine. Studies looking at this immune response show that while the first injection gives Covid-19 survivors a big boost, the second shot of the vaccine makes little difference.
For someone who has contracted Covid-19, the first injection is like booster and they can even have side effects like someone getting a second dose of the vaccine.
“The argument is plausible that people who are already infected, have antibodies to the virus, reasonably get only one dose,” said Dr. Paul Offit, director of the Center for Vaccine Education at Children’s Hospital of Philadelphia, is quoted from USA Today.
Because the second injection is not needed, the vaccine ration can be allocated to other people who need it more. However, there is no danger if Covid-19 survivors want to keep getting the second injection.
Florian Krammer, professor of microbiology at Icahn School of Medicine at Mount Sinai in New York City who led one of the latest studies, said the challenge is identifying who doesn’t need that second dose.
“The implementation may not be that easy,” said Krammer. This is inseparable from the diagnosis of Covid-19 and the clarity of whether certain antibody levels need to be protected.
Antibody tests, also known as serologic tests, detect a protein made by the immune system in response to infection.
According to Krammer’s study, which was posted at the start of the month but not yet peer-reviewed, previously infected people who had the first injection had a similar immune response to someone who had not yet had Covid-19 who had received the second injection.
And that second shot just adds a little extra protection, the study found.
“Changing the policy to give these people only one dose of the vaccine will not negatively impact their antibody titres, spare them unnecessary pain and relieve many doses of much-needed vaccine,” he concluded.
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