Scientists reported Monday that the vaccine produced by Pfizer-BioNTech and Moderna cause a persistent immune reaction in the body that may protect against coronavirus for years.
The findings add to growing evidence that most people who receive the mRNA vaccine may not need the boosters. As long as the virus and its variants Has not evolved beyond the current form which does not guarantee People who have recovered from COVID-19 Before vaccination, stimulants may not be needed. Even if the virus causes major changes
Ali Ellebedy, an immunologist at Washington University in St. Louis, who led the study, said: “It’s a good sign of how resistant our immunity is from this vaccine.
The study did not look at vaccines made by Johnson & Johnson, but Dr Elebedi said he expected the immune response to be less resistant to vaccines produced by mRNA vaccines.
Dr. Ellebedy and his colleagues reported last month that in Covid-19 survivors, immune cells known to the virus remained in the bone marrow for at least eight months after infection. A study by another team indicated that so-called memory B cells remained mature and stronger for at least a year after infection.
from such findings Researchers suggest that immunity may last for years. in those who are infected and subsequently vaccinated But it’s unclear whether vaccination alone can have the same long-term effects.
after infection or vaccination Special structures called germ centers form in the lymph nodes. This structure is an elite school for cell B.
The wider the range and the longer these cells need to be trained. The more likely they are to be able to block potential strains of the virus.
After contracting the corona virus Germ centers form in the lungs. But after vaccination The study of cells takes place in the axillary lymph nodes. which is within the reach of researchers
Dr. Ellebedy’s team found that 15 weeks after the first vaccination The incubator remained very active in a total of 14 participants, and the number of known coronavirus memory cells did not decrease.
“The fact that the reaction continued for almost four months after vaccination That’s a very good sign,” said Dr. Elebedi. in general The fertility center peaks one to two weeks after vaccination and then fades away.
Deepta Bhattacharya, an immunologist at the University of Arizona, said: Usually within four to six weeks there is not much left. But the mRNA vaccine-activated incubator “is still going. many months have passed And most people didn’t drop that much.”
Dr. Bhattacharya notes that most of what scientists know about the persistence of incubators is based on animal research. This new study is the first to show what happens in people after vaccination.
The results suggest that the vast majority of vaccinated people will be protected in the long term. at least from the available variables. but the elderly people with weakened immune systems And people who take drugs that suppress the immune system may need stimulants. People who have survived Covid-19 and are vaccinated later may not need it at all.
How long protection from mRNA vaccines will last is difficult to predict. Experts say that without the variables that help avoid immunity, in theory, immunity will last longer. But the virus is clearly evolving.
About 4,000 federal offenders who were part of last year’s release of nonviolent prisoners to help slow the spread of the coronavirus could soon return to prison — not because they violated the conditions of detention. at home But because the United States seems to be moving The epidemic crisis has passed.
On the last day of the Trump administration The Justice Department has issued a memorandum that inmates sentenced to more than “During the epidemic emergency” will have to go back to jail.
But some lawmakers and activists are urging President Biden to revoke the rules and use his executive powers to keep prisoners at home or change their sentences altogether. It argues that the pandemic has shown that various punitive systems in America will rely much less on incarceration.
Biden has pledged to make an overhaul of the criminal justice system an important part of his presidency. He said his administration had cut the number of prisoners in prison by more than half. and expanding projects that offer alternatives to incarceration.
While the White House has yet to announce a decision on those incarcerated in the home. The administration appears to be following the advice of the Trump-era memo.
Andrew Bates, spokesman for Mr Biden. said in a statement that the President “Committed to reducing incarceration and helping people reintegrate into society,” but he referred questions about the future of home inmates to the Justice Department.
The White House reviews the declaration of emergency every three months, leaving former prisoners in a derelict state. The next deadline is in July.
Even though Congress has approved billions in grants for small companies to help them pay their employees during the pandemic But it doesn’t reach the smallest and most demanding businesses.
Then two small companies were born and found a way to help those businesses.
They also help themselves for their work The company had to collect more than $3 billion in fees. According to a New York Times analysis, more than 5,200 participating lenders.
One company, Blueacorn, never existed before the pandemic. The other is Wumply, which was founded ten years ago. by selling marketing software But this year, they’ve become the stars of the Paycheck Protection Program.
Blueacorn and Wumply are not banks, so they can’t really lend money. Instead, they acted as middlemen. This creates a gap between what the big banks It won’t do with what small banks can’t.
From late February to May 31, when the program ended, companies processed 2.3 million in loans, most of them under $17,000 and most going solo, which tended to be run by women and people of color.
However, all the rush has its downsides. including broad customer service failures. And some lenders regret the signing of urgent deals that sent most of the profits to their partners.
As the country’s vaccination campaign progresses slowly, And without dosages, it was suddenly clear that one of the greatest challenges in achieving mass immunity is convincing young people of all backgrounds to be vaccinated.
in the past few days Federal officials have expressed alarm about the low vaccination rates among Americans in their late teens and 20s, and blame them for the country’s total failure to meet President Biden’s goal of “improving the health of the nation.” Give initial dose to at least 70% of adults by July 4.
Straightforward selling to seniors — vaccines can save your life — doesn’t always work for 20 healthy people. who know they are less likely to face the worst consequences of COVID.
As government officials compete to figure out how to attract young people to vaccinations. Nationwide interviews suggest that no amendments will affect these holdings. Some people strongly oppose Others just don’t care. and there are others still in doubt
But almost everyone who needs the vaccine already has it. And now health workers face inertia, fear, busy schedules. and overlapping false information As they try to persuade Gen Z to get the vaccine
Public health experts say vaccinating young people is essential to keeping the number of infections low and preventing new outbreaks. especially with the greater spread of the infected delta variant.
Since the vaccine became available six months ago, health authorities have focused on varying levels of success in inducing groups identified as reluctant. This includes people living in rural communities. african american and conservative groups get vaccinated
But in the past few days Health officials have identified young people as a major challenge for a country where fewer than a million people get vaccinated daily. That’s down from a peak in April of more than 3.3 million.
In a federal report released last week Only a third of adults aged 18-39 reported being vaccinated. The rates are especially low among blacks among people aged 24 or younger. and among those with low incomes, low education and without health insurance.