Tuesday, September 21, 2021 (HealthDay News)
“Our single-shot vaccine produces a strong immune response and long-term immunological memory, and Johnson & Johnson boosters COVID-19 (New Coronavirus Infection) Vaccinated and strong defense against COVID-19 (New Coronavirus Infection) Dr. Mathai Mammen, Global Head of Research and Development at Johnson & Johnson’s Janssen, said in a statement.
The company claimed that two-shots are 100% effective against severe illness. But that estimate is uncertain, New York Times report.
The new data has been submitted to the US Food and Drug Administration. Nearly 15 million Americans have obtained the Johnson & Johnson single-dose vaccine since it was approved in February. Times Said.
The protection provided by Pfizer and Moderna vaccination Although it appears to be declining over time, the J & J vaccine seems to retain its effectiveness.so study Of the approximately 400,000 vaccinated and more than 1.5 million unvaccinated people, the vaccine showed little sign of decline after 5 months and remained 81% effective, the company said. rice field.
Last week, an FDA committee recommended booster shots for people over the age of 65 who received two Pfizer vaccines. Until the results of this latest trial were announced, it was not clear if a second dose of the J & J vaccine would be needed.
The study enrolled 32,000 people worldwide and compared those who received the J & J vaccine once with those who received it twice. According to the company, the second shot showed a four-fold increase in antibody compared to the first shot.
Many people were vaccinated with the J & J vaccine more than 8 weeks ago. Some studies suggest that longer times between doses provide better protection, Times report.
Another study found that administration of the J & J vaccine booster 6 months after a single dose could increase protection by a factor of 12 the following month. If that is true, the second shot given after a few months may be even more effective than after 8 weeks. Times Said.
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sauce: New York Times
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Booster dose of J & J COVID vaccine boosts immunity
Source link Booster dose of J & J COVID vaccine boosts immunity