Why They Might Just Work – .

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Why They Might Just Work – .


The results for people who initially received a Johnson & Johnson vaccine were particularly striking. Those who received a Johnson & Johnson booster saw the antibodies quadruple. Switching to a Pfizer-BioNTech booster increased antibody levels 35-fold. A Moderna boost increased them 76-fold.

Dr Lyke cautioned against drawing hasty conclusions from the results so far. The researchers hope that by next month, they will know how much different boosters increase T cells, not just antibodies. It is possible that Johnson & Johnson’s vaccine shines in these results.

What to know about Covid-19 booster injections

The FDA has cleared booster shots for a select group of people who received their second dose of the Pfizer-BioNTech vaccine at least six months previously. This group includes: vaccinated people who are 65 years of age or older or living in long-term care facilities; adults who are at high risk for severe Covid-19 due to an underlying medical problem; healthcare workers and others whose jobs put them at risk. People with weakened immune systems may receive a third dose of Pfizer or Moderna four weeks after the second injection.

The CDC said the conditions that qualify a person for a booster shot include: hypertension and heart disease; diabetes or obesity; cancer or blood disorders; weakened immune system; chronic lung, kidney or liver disease; dementia and some disabilities. Pregnant women and current and former smokers are also eligible.

The FDA has cleared the boosters for workers whose work puts them at high risk of exposure to potentially infectious people. The CDC says this group includes: emergency medical workers; education workers; food and agricultural workers; manufacturing workers; correctional workers; workers in the US postal service; public transport workers; employees of grocery stores.

At this time, this is not recommended. Recipients of Pfizer vaccine are advised to be vaccinated by Pfizer, and recipients of Moderna and Johnson & Johnson should wait until booster doses from these manufacturers are approved. The FDA plans to allow Americans to receive a different vaccine than the one they originally received as a booster. The “mix and match” approach may be approved once boosters for Moderna and Johnson & Johnson recipients are authorized.

Yes. The CDC says the Covid vaccine can be given regardless of the timing of other vaccines, and many pharmacy websites allow people to schedule a flu shot along with a booster dose.

“We will have a more complete picture,” she said.

It’s entirely possible. More than 100 Covid-19 vaccines are currently in clinical trials, and even more are being tested on animals. Adam Wheatley, an immunologist at the University of Melbourne in Australia, predicted that some of these new vaccines could turn out to be superior boosters.

Unlike vaccines made from mRNA or adenoviruses, those from companies like Sanofi-Pasteur and Novavax contain large amounts of viral proteins.

“I suspect the protein boosters will be really good,” Dr. Wheatley said. “When you come up with a relatively large discharge of protein in the body, it results in a pretty robust booster of antibody responses. “

Nicolas Kressmann, spokesperson for Sanofi, said the company is well advanced in testing its protein-based vaccine as a booster for people who have already received other vaccines. “Our intention is also to develop our vaccine as a universal booster, capable of boosting immunity regardless of the first vaccine received,” he said.

It is not yet clear how many Covid-19 boosters we will need to achieve lasting protection. It is conceivable that one hit could be enough. But it’s also possible that Covid-19 vaccines will need to be administered every year, much like a seasonal flu shot.

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