A study indicates that vaccinated people should still take steps to prevent the spread of COVID-19 to others.
The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19.
Lambda variant shows vaccine resistanceThe Lambda variant of the coronavirus, first identified in Peru and now spreading in South America, is highly infectious and more resistant to vaccines than the original version of the virus the emerged from Wuhan, China, Japanese researchers have found.
In laboratory experiments, they found that three mutations in Lambda’s spike protein, known as RSYLTPGD246-253N, 260 L452Q and F490S, help it resist neutralization by vaccine-induced antibodies.Two additional mutations, T76I and L452Q, help make Lambda highly infectious, they found.
In a paper posted on Wednesday onbioRxivahead of peer review, the researchers warn that with Lambda being labeled a “Variant of Interest” by the World Health Organization, rather than a “Variant of Concern,” people might not realize it is a serious ongoing threat. headtopics.com
Although it is not clear yet whether this variant is more dangerous than the Delta now threatening populations in many countries, senior researcher Kei Sato of the University of Tokyo believes “Lambda can be a potential threat to the human society.”Third mRNA dose may boost antibody quantity, but not quality
Among fully vaccinated people who never had COVID-19, getting a third dose of an mRNA vaccine from Pfizer /BioNTech or Moderna would likely increase levels of antibodies, but not antibodies that are better able to neutralize new virus variants, Rockefeller University researchers reported on Thursday on
bioRxivahead of peer review.They note that in COVID-19 survivors, the immune system’s antibodies evolve during the first year, becoming more potent and better able to resist new variants.In 32 volunteers who never had COVID-19, they found that antibodies induced by mRNA vaccines did evolve between the first and second shots.
But five months later, vaccine-induced antibodies were “equivalent” to those seen after the second dose, with “little measurable improvement” in the antibodies’ ability to neutralize a broad variety of new variants, said coauthor Michel Nussenzweig.Therefore, he said, giving those individuals a third dose of the same vaccine would likely result in higher levels of antibodies that remain less effective against variants. headtopics.com
“At the moment, the vaccine remains protective against serious infection,” Nussenzweig said.“Should we learn that efficacy is indeed waning for serious infection, which is not really the case to date,” then a booster dose of “whatever is available” might become appropriate, he added.
Should an updated vaccine become available that protects against specific variants, “then that would be the choice.”Majority of U.S. childcare providers are vaccinatedU.S. childcare providers have higher COVID-19 vaccination rates than U.S. adults in general, a new study suggests.
Researchers sent surveys in May and June to nearly 45,000 childcare providers and received responses from 48%.Overall, 78% of respondents said they were fully vaccinated, compared with a rate of about 60% in the general U.S. population. Roughly 73% of home-based caregivers said they were vaccinated, compared to nearly 80% of those working in facilities.
Rates varied widely by state, from a low of 54% in Wyoming to a high of 89% in Massachusetts.The patterns of relative differences in vaccination rates were similar to what is seen in the general population, the researchers reported on Sunday onmedRxiv headtopics.com
ahead of peer review, with younger, lower-income and Black or African-Americans reporting the lowest vaccination rates.“Efforts to promote COVID-19 vaccine uptake among childcare providers take on added significance when considering the emergence of the more transmissible Delta variant,” the authors said.
With young children ineligible for COVID-19 vaccination, “the limiting factor in ensuring an adequate supply of childcare services will be contingent on protecting the personal health of childcare providers,” they said. Read more: Interaksyon »
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Buses serve as mobile COVID-19 vaccine sites for transport workersFive passenger buses have been converted into mobile vaccination clinics for the inoculation of at least 6,000 transportation workers in Parañaque City, according to the Department of Transportation. I had Covid. CDC told me NOT to get vaccinated. I can’t get a vaccine passport even though I am the safest person around. I have lifelong immunity. This is BS 😡
The surge of COVID-19 infections for unvaccinated people is only beginning, experts warnWith the recent increase of COVID-19 infections and hospitalizations due to the spread of the highly transmissible Delta variant, health experts and officials expect the surge to worsen as long as large segments of the country remain unvaccinated. The delta variant is not that dangerous as the danger of the spike eggwhite in the vaccin Its very dangerous it ruins ur body till dead ☠️