“It is extremely important to suppress the group of people who may be susceptible to the virus”, said the la CNBC. CEO Pfizer added that vaccines will be an important tool in the fight against highly contagious variants.
Pfizer said earlier this month that updated data from his clinical trial showed that his vaccine was extremely effective six months after the second dose.
In February, Pfizer and BioNTech said they were testing a third dose of the Covid-19 vaccine to better understand the immune response to new variants of the virus.
Similar announcement from Moderna
Although the Moderna vaccine is now more than 90% effective six months after the second dose, the third dose would increase immune protection.
“The virus changes enough that the immune system no longer recognizes it and a new vaccine is needed. This third dose is a necessary buster to ensure high protection for the South African strain and will probably be tested soon for the Brazilian one as well. “, said Octavian Jurma, scientific researcher.
Although vaccines seem to offer a great deal of protection, the new variants have been shown to reduce their effectiveness.
Moderna officials say annual Covid-19 vaccines will become commonplace and that the new coronavirus will not disappear from the planet.
“The profile matches the profiles of other approved vaccines that offer a significant benefit. Therefore, we hope that most people will continue to be immunized, even if they have a few more critical days with flu-like symptoms. They need to know that this vaccine provides protection against COVID-19 disease. ”, said Stephen Hoge, president of Moderna.
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