Tag: NIAID

People who recovered from COVID-19 have effective T-cells against the omicron

Posted on by Jesse Santiano, M.D.

Recent studies are starting to say that the neutralizing antibodies elicited by prior COVID-19 infections and vaccinations are ineffective against the omicron variant. I talked about them at Study shows absence of omicron neutralization with the Pfizer and AstraZeneca shots, and Omicron can evade antibodies from vaccinated and COVID convalescent people. But, there is more…

Ultrapotent antibodies from natural infection against diverse and highly transmissible SARS-CoV-2 variants

Posted on by Jesse Santiano, M.D.

RNA viruses like the SARS-CoV-2 constantly mutate. The mutations happen inside a person’s body during a COVID-19 infection. The alterations in the gene change the protein sequences and conformation of the virus. The mutations alter the viral properties. For example, a study showed that a change in a single nucleotide, the building block of an…