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.
"These findings demonstrate the benefits of vaccinating those with prior infection for optimal protection against the Omicron variant," said coauthor Dr. Laith Abu-Raddad of Weill-Cornell Medicine - Qatar in a statement. While protection from the vaccine booster waned "rapidly," protection from previous infection held fairly steady for nearly a year, his team found.
When Omicron did escape the body's first lines of defense, any form of immunity - whether from vaccination or natural infection or both - "showed strong protection against Covid-19-related hospitalization and death, at an effectiveness of more than 70%."COVID-19-related neurological symptoms, such as memory and concentration issues, can last half a year or more in some patients, according to a small study.
Among 27 patients who had such symptoms weeks after recovering from COVID-19, only nine reported complete resolution six months after joining the study, researchers reported on Wednesday in. The remaining 18 still had nervous system abnormalities - most often, impaired memory and trouble concentrating - although generally the symptoms had become less severe.
In four patients, her team saw a previously unidentified set of symptoms that included cognitive deficits, tremor and difficulty balancing. "These are folks who had no neurological problems before COVID-19, and now they have an incoordination of their body and possible incoordination of their thoughts," said Graves. "We did not expect this."
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