[ad_1]
In recent days, news and warnings have abounded about the danger of new strains of the corona virus emerging and the need for caution, but a new study has emerged today to calm nerves and reduce tension around the world. due to the pandemic.
The results of new research have revealed that the Pfizer and Moderna vaccines elicit an immune system response that can prevent the Corona virus for years to come.
The latest study also supports growing evidence that most people who have been immunized with messenger RNA (mRNA) vaccines may not need a booster.
In turn, Ali Al-Yaidi, an immunologist at Washington University in St. Louis, America, who led the study, told the New York Times that the results are a good sign of the sustainability of our immunity. against this vaccine.
He pointed out that the immune cells that recognize the virus stayed in the bone marrow for at least 8 months after the crown infection, while the memory B cells continued to mature and got stronger for at least a year. after infection.
The information also confirmed that immunity can last for years, and possibly a lifetime, in infected people who were subsequently vaccinated, but it was not clear whether vaccination alone would show the same strength.
Crowned
How does the process work?
After infection or vaccination, the researchers explain, a specialized structure called the germinal center forms in the lymph nodes, and this structure is where B cells are drawn.
They also added that after infection with the Corona virus, the germinal center forms in the lungs, but after vaccination, the cells end up in the lymph nodes in the armpit, making them accessible to researchers.
The study also found that 15 weeks after the first dose of the vaccine, the germinal center was still very active in the 14 study participants, and that the number of memory cells that recognized the coronavirus had not decreased.
Scientists pointed out that people who survived the outbreak and were subsequently vaccinated may never need a booster shot, however, the elderly, people with weakened immune systems and those taking immunosuppressive drugs may still need boosters.
big global concern
It should be noted that the novel Corona virus mutant has caused great concern worldwide, due to its ability to weaken the effectiveness of antibodies secreted by current vaccines or previous Corona virus infections.
This mutation has also worried some observers that it is more dangerous than the widespread delta mutation, according to a prestigious medical journal.
Coronavirus victims (Reuters)
And mutations have appeared all over the world, where the “B117” or “Alpha” mutant was first seen in England. The B1.135 or beta strain was first detected in South Africa.
The Delta variant, also known as P1.617.2, was first seen in India. The United States has released several, including strain B1.427 or Epsilon which was first seen in California.
Additionally, current vaccines protect well against all strains so far, but that could change at any time. For this reason, doctors and public health officials want more people to be vaccinated.
Source link
