An Israeli trial shows that a fourth vaccine dose offers only a slight boost against Omicron infection
could be beneficial for people at higher risk of severe illness. Several countries, including Israel, Chile and Sweden, are offering fourth doses to older adults and other groups.
Regardless of the vaccine brand, the fourth dose raised participants’ levels of ‘neutralizing’ antibodies, which can block viral infection of cells. But levels after the fourth dose did not surpass those observed shortly after the Those antibody data might explain why the fourth dose did not translate into substantial extra protection against infection with Omicron. A four-dose course of the Pfizer vaccine was 30% more protective against infection than a three-dose course; for Moderna, that extra efficacy was 11%.That meant that, by the end of January, 52 participants who had received a fourth dose had tested positive for SARS-CoV-2 and 73 of the matched controls who had received only three doses had done so.
México Últimas Noticias, México Titulares
Similar News:También puedes leer noticias similares a ésta que hemos recopilado de otras fuentes de noticias.
Israeli PM Naftali Bennett Proposes Israel Mediate Between Russia and UkraineIsraeli Prime Minister Naftali Bennett offered to act as a mediator between Russia and Ukraine during a phone call with President Vladimir Putin on Sunday, a statement from the Kremlin said.
Leer más »
Fourth dose of COVID vaccine offers only slight boost against Omicron infectionIsraeli trial shows a fourth vaccination raises antibody levels but provides little extra protection against SARS-CoV-2 infection.
Leer más »
Fourth dose of COVID vaccine offers only slight boost against Omicron infectionIsraeli trial shows a fourth vaccination raises antibody levels but provides little extra protection against SARS-CoV-2 infection.
Leer más »
Pfizer/BioNTech COVID vaccine less effective in ages 5-11 -New York studyTwo doses of the Pfizer Inc and BioNTech SE COVID\u002D19 vaccine was protective against severe disease in children aged 5 to 11 during the recent Omicron variant…
Leer más »
Pfizer Covid vaccine may offer little protection against infection in kids 5-11Researchers found that the vaccine’s effectiveness dropped to 12 percent from 68 percent amid the omicron surge.
Leer más »
Pfizer Covid vaccine was just 12% effective against omicron in kids 5 to 11, study findsNY health officials found that the effectiveness of Pfizer's vaccine against Covid plummeted from 68% to 12% for children ages 5 to 11 as the omicron surged.
Leer más »