Che single-dose vaccine called Janssen Covid-19, which can be stored at refrigerator temperatures, joins those of Pfizer / BioNTech and Moderna in the massive vaccination campaign in the United States, where the pandemic has claimed more than 500,000 lives .
After studying in detail the data of clinical trials, conducted on more than 43,000 people, a committee of experts had recommended Friday the marketing of the vaccine of the American company.
At least three million doses of the “J&J” product are ready for distribution as early as next week, according to the US government.
Johnson & Johnson has committed to ship 100 million doses to the United States by the end of June.
With 600 million doses ordered in total from Pfizer and Moderna, the United States will already have, by the end of July, enough vaccines to immunize almost the entire population.
But the addition of those from Johnson & Johnson could further accelerate the vaccination campaign.
In total, more than 72 million bites have already been carried out in the country most bereaved by the pandemic in absolute value.
The “J&J” vaccine, which injections have already started in South Africa, is a “viral vector” vaccine.
It uses as a carrier another low virulent virus, transformed to add genetic instructions from part of the virus responsible for Covid-19. Once in the cells, a typical SARS-CoV-2 protein is produced, educating the immune system to recognize it.
“After rigorous analysis of the data, scientists and doctors at the FDA have determined that the vaccine meets FDA criteria for safety and efficacy for emergency clearance,” the director said in a statement. of the agency’s Biological Assessment and Research Center, Peter Marks.
In clinical trials, the vaccine’s efficacy was 85.9% against severe forms of Covid-19 in the United States, according to figures released by the FDA. All regions of the clinical trial combined, it was 66.1% against moderate forms of the disease, and overall “similar” for all categories of the population (ages, ethnic groups).
The most frequently observed side effects were pain at the injection site, headache, fatigue, and muscle pain.
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