Sunday, April 14, 2024

Exposure to harmless coronaviruses boosts SARS-CoV-2 immunity

A team of researchers led by the University of Zurich (UZH) has discovered another component that contributes to SARS-CoV-2 immunity – previous antibody responses to other, harmless coronaviruses. “People who have had strong immune responses to other human coronaviruses also have some protection against SARS-CoV-2 infection,” says Alexandra Trkola, head of the Institute of Medical Virology at UZH. In their study, the researchers used a specially developed assay to analyse antibody levels against four other human coronaviruses in 825 serum samples taken before SARS-CoV-2 emerged. They also examined 389 samples from donors infected with SARS-CoV-2. Combining these analyses with computer-based models enabled the team to predict how well the antibodies would bind to and neutralize invading viruses. The researchers were able to demonstrate that people who caught SARS-CoV-2 had lower levels of antibodies against coronaviruses that cause common colds compared to uninfected people. In addition, people with high levels of antibodies against harmless coronaviruses were less likely to have been hospitalized after catching SARS-CoV-2. This type of immune response is referred to as cross-reactivity, and it also occurs with T cell responses, the additional line of the immune system in the defence against infections.

 

https://medicalxpress.com/news/2021-11-exposure-harmless-coronaviruses-boosts-sars-cov-.html

BIG Media
BIG Media
Our focus is on facts, accurate data, and logical interpretation. Our only agenda is the truth.
spot_img

BIG Wrap

Israel and U.S. shoot down missiles and drones launched from Iran

(BBC News) Iran has launched dozens of drones and missiles at Israel in a retaliatory attack. Sirens and loud explosions have been heard as Israel's air...

HELP sign leads to rescue of three men from island

(BBC News) Three men were rescued by the US Coast Guard off an island in Micronesia after they sent out a plea for "HELP"...