A man receives a booster dose of Pfizer's coronavirus disease vaccine at a vaccination centre in Brussels, Belgium, on Jan 5, 2022.The following is a summary of some recent studies on Covid-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.New research may help shed light on a rare but serious blood-clotting problem associated with the Covid-19 vaccines from AstraZeneca and Johnson & Johnson.
The finding "paves the way for a potential genetic screening tool to identify patients carrying this gene variant who are at risk of this severe complication" after receipt of these vaccines, said Tom Gordon and Jing Jing Wang of Flinders University of South Australia, two of the study's authors. Netherlands-based researchers measured the need for mechanical ventilation, high-flow nasal oxygen, readmission for Covid-19 after hospital discharge or lack of clinical improvement among 18 subjects four weeks after administration of either SARS-CoV-2 hyperimmune globulin or immune globulin that did not contain antibodies to the coronavirus.
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