Vaccines against COVID-19 were developed early in the pandemic. But the virus has been changing. Now there are different versions, called variants, all over the world.
In a recent study from Beth Israel Deaconess Medical Center, researchers found that a single-shot Janssen/Johnson & Johnson vaccine still protects against new COVID-19 variants.
They tested 20 volunteers who received the vaccine. They took blood samples about two months later.
The samples were tested for different cells and antibodies that can fight the disease. The team looked at whether these provided protection against the original virus.
They also looked for protection against the alpha, beta, and gamma variants.
Overall, the vaccine offered strong protection against both the original virus and the variants.
The team found lower amounts of neutralizing antibodies to the variants than to the original virus. These are a type of antibody that can block infections. But other immune responses were similar.
These findings showed that this vaccine has strong protection against many of the COVID-19 variants in the world today.
A follow-up study showed protection against other variants, including the delta variant. More research is still needed to better understand how the body fights off COVID-19.
If you care about COVID vaccines, please read studies about this ‘warm vaccine’ may effectively fight all COVID-19 variants and findings of new inhaled COVID-19 vaccine may prevent disease and transmission.
For more information about COVID vaccines and your health, please see recent studies about COVID-19 vaccine protection is lower and slower in people with this health problem and results showing that scientists develop new vaccine to block COVID-19 and variants.
One researcher of the study is Dr. Dan Barouch.
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