One of the Current big unknowns is knowing how long the immunity of vaccines lasts against coronavirus. Thanks to scientific work, there are already several in circulation in all corners of the planet and they have a very high efficiency: AstraZeneca, Janssen, Sputnik, Pfizer, Moderna …
Precisely, these last two share an encouraging fact about the protection they offer to those vaccinated. A report published on Tuesday in the New England Journal of Medicine states that “the Antibodies elicited by Moderna’s vaccine persisted for 6 months after the administration of the second dose, as detected by three different serological tests “.
Thus, specialists emphasize that discovered “neutralizing and binding antibodies caused by the vaccine of Moderna messenger RNA “in the 33 study participants who conducted 180 days after the second dose prick.
Same as Pfizer
Follow the line of what he confirmed Pfizer last week against yours. According to the company, the cure remains more than 91% effective against disease with any symptoms for at least six months. To reach these conclusions, Follow-up tests were done on people who received the injections during various studies.
Danger of variants
It should be noted that these investigations were carried out before new strains of coronavirus emerged and began to spread, which have increased the concern of experts. The scientists measured the antibodies that can block the virus in 50 people who received the vaccine Sinopharm o Sinovac developed in China and many showed a total or partial loss of efficacy against the South African variant. Against those that did seem offer protection was against the British strain.
Faced with these new difficulties due to changes in the virus, Pfizer and Moderna have already announced that they are working to update their vaccines or perhaps to design a reinforcement in case of need to cope with new versions of the pathogen.
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