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Lukas Schulze/Getty Images toggle caption Lukas Schulze/Getty Images A woman receives the Johnson & Johnson COVID-19 at a drive-in vaccination event last week in Meerbusch, Germany. Lukas Schulze/Getty Images The emergence of new and more infectious variants of the coronavirus has raised a troubling question: Will the current crop of COVID-19 vaccine prevent these variants from causing disease? Nature suggests the answer is yes. The research was fairly straightforward. Scientists took blood from volunteers who had received the Johnson & Johnson COVID-19 vaccine and looked at the levels of neutralizing antibodies, the kind that prevent a virus from entering cells. ....
New Evidence Suggests COVID-19 Vaccines Remain Effective Against Variants Update RequiredTo play audio, update browser or Flash plugin. A woman receives the Johnson & Johnson COVID-19 at a drive-in vaccination event last week in Meerbusch, Germany. Lukas Schulze / Getty Images The emergence of new and more infectious variants of the coronavirus has raised a troubling question: Will the current crop of COVID-19 vaccine prevent these variants from causing disease? Nature suggests the answer is yes. The research was fairly straightforward. Scientists took blood from volunteers who had received the Johnson & Johnson COVID-19 vaccine and looked at the levels of neutralizing antibodies, the kind that prevent a virus from entering cells. ....
Pfizer/BioNTech and Moderna vaccines induce T-cell immunity against SARS-CoV-2 Researchers in the United States have shown that the Pfizer/BioNTech and Moderna messenger RNA (mRNA) vaccines are effective at generating T-cell immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) – the agent that causes coronavirus disease 2019 (COVID-19). The team found that vaccinated individuals developed robust T-cell responses to the SARS-CoV-2 spike protein that the virus uses to bind to and infect host cells. The researchers – from Massachusetts General Hospital and Harvard Medical School in Boston – report that the T-cell response increased significantly from baseline after just one vaccine dose. After a second dose, the response was more potent than in a convalescent cohort. ....