Here is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that have yet to be certified by peer review.
Two separate research teams last week reported on laboratory tests of monoclonal antibodies that appear to protect against a broad range of COVID-19 virus variants. One study, published on Wednesday in, identified "high-level, broad-spectrum" antibodies in blood samples from survivors of the original SARS outbreak in 2003 who recently received the Pfizer/BioNTech vaccine against SARS-CoV-2, the virus that causes COVID-19.
on Saturday ahead of peer review, they conclude that shedding of infectious virus is reduced in breakthrough cases, although patients are still contagious.Protective antibody levels decline faster in recipients of the mRNA COVID-19 vaccine from Pfizer/BioNTech than in COVID-19 survivors, according to doctors at one of Israel's largest HMOs. They tracked antibody levels in 2,653 adults who received two doses of the vaccine and in 4,361 COVID-19 survivors who were never vaccinated.
that breakthrough infection rates increase starting about five months after vaccination. Dr. Israel said the combined data argues for a booster shot five months after the second injection, especially for high-risk individuals.
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