Data Confirms Covid Vaccines Offer Strong Protection Against Hospitalization

New data presented to a Centers for Disease Control and Prevention committee provided more evidence that Covid-19 vaccines offered robus...


New data presented to a Centers for Disease Control and Prevention committee provided more evidence that Covid-19 vaccines offered robust protection against serious illness until July, after the Delta variant of the coronavirus spread widely in United States.

Scientists also confirmed that Pfizer-BioNTech and Moderna injections have a low risk of heart problems in younger men, but the benefits still outweigh the risks.

At the committee meeting on Monday, Dr. Sara Oliver, a CDC scientist, presented unpublished data from Covid-Net, a hospital surveillance system. All three vaccines used in the United States remained very effective in preventing hospitalizations from April through July, when Delta became dominant, the data showed.

For adults under 75, injections were at least 94% effective in preventing hospitalizations, a rate that remained stable for months, Dr Oliver said. Protection against hospitalization declined in July for adults aged 75 and over, but still remained above 80%.

“Covid vaccines continue to maintain high protection against serious illness, hospitalization and death,” Dr Oliver said.

Protection against infections or minor illnesses, however, appears to have waned somewhat in recent months. “These reasons for lower efficiency probably include both the decrease over time and the Delta variant,” she said.

The data comes in the midst of an ongoing debate about the need and timing of booster doses. August 18, health officials have recommended adults who have received Pfizer or Moderna vaccines receive a third injection eight months after their second dose. If the FDA allows the booster injections, they will be available from September 20, senior federal health officials said.

The recommendation was based on data suggesting that vaccines may become less effective at protecting against infections and mild illness over time. But injections still work well against serious illness and death, and many scientists have criticized the plan for the booster shots, saying it’s not yet clear whether they’re needed.

The CDC’s advisory committee will consider additional data on safety, efficacy, and the potential need for booster doses at a meeting in September.

However, immunizing unvaccinated people should continue to be the top priority, said Dr Oliver: “Planning for the delivery of booster doses to vaccinated people should not discourage awareness for the delivery of the primary series to the vaccinees. unvaccinated people. “

The committee voted unanimously to recommend the Pfizer-BioNTech vaccine, which was approved by the Food and Drug Administration last week, for Americans 16 years of age or older.

The scientists also presented the committee with new data on the risks of two heart diseases after vaccination: myocarditis, an inflammation of the heart muscle, and pericarditis, an inflammation of the membrane that surrounds the heart.

Side effects tend to be mild, temporary, and rare, the data confirmed. For every million doses of the second injection given to 12- to 39-year-olds, there were an additional 14 to 20 cases of heart problems, according to new data, which was presented Monday at a meeting of an independent advisory committee for the CDC

“The data suggest an association of myocarditis with mRNA vaccination in adolescents and young adults,” said Dr. Grace Lee, a Stanford pediatrician and committee chair, at Monday’s meeting. “Additional data is being compiled to understand potential risk factors, optimal management strategies and long-term outcomes. “

But the benefits of vaccines are substantial, even for those most at risk. According to an analysis presented on Monday by a CDC scientist, every million doses of Pfizer vaccine given to boys aged 16 and 17 is expected to cause 73 cases of heart problems, while preventing more than 56,000 Covid-19s. cases and 500 associated hospitalizations.

A study published in the New England Journal of Medicine last week reported that the risk of myocarditis was significantly higher after infection with the virus than after vaccination.

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Newsrust - US Top News: Data Confirms Covid Vaccines Offer Strong Protection Against Hospitalization
Data Confirms Covid Vaccines Offer Strong Protection Against Hospitalization
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