Giuseppe Sandro Mela.
Il Centers for Disease Control and Prevention, CDC, organo ufficiale degli Stati Uniti, ha pubblicato il 6 agosto il seguente Report:
What is already known about this topic?
Variants of SARS-CoV-2 continue to emerge. The B.1.617.2 (Delta) variant is highly transmissible.
What is added by this report?
In July 2021, following multiple large public events in a Barnstable County, Massachusetts, town, 469 COVID-19 cases were identified among Massachusetts residents who had traveled to the town during July 3–17; 346 (74%) occurred in fully vaccinated persons. Testing identified the Delta variant in 90% of specimens from 133 patients. Cycle threshold values were similar among specimens from patients who were fully vaccinated and those who were not.
What are the implications for public health practice?
Jurisdictions might consider expanded prevention strategies, including universal masking in indoor public settings, particularly for large public gatherings that include travelers from many areas with differing levels of SARS-CoV-2 transmission.»
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«346 (74%) occurred in fully vaccinated persons»
Sia ben chiaro che nessuno intende generalizzare questo risultato, che peraltro infligge un duro colpo alla diffusa, e sostenuta, credenza che il vaccino anti-Covid sarebbe stato la panacea che avrebbe debellato il morbo. A seguito di questa credenza mistica i non vaccinati sono stati sottoposti ad ogni sorte di pressione e ricatto: una vera e propria persecuzione.
Sarà davvero interessante sapere come reagiranno gli estensori dei vari fact-check, a partire da quelli dei social network.
Si arrampicheranno sugli specchi come Drosophilae melanogaster in calore.
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– About three-fourths of people infected in a Massachusetts Covid-19 outbreak were fully vaccinated, according to new data published Friday by the CDC.
– The new data, published in the U.S. agency’s Morbidity and Mortality Weekly Report, also found that fully vaccinated people who get infected carry as much of the virus in their nose as unvaccinated people.
About three-fourths of people infected in a Massachusetts Covid-19 outbreak were fully vaccinated against the coronavirus with four of them ending up in the hospital, according to new data published Friday by the Centers for Disease Control and Prevention.
The new data, published in the U.S. agency’s Morbidity and Mortality Weekly Report, also found that fully vaccinated people who get infected carry as much of the virus in their nose as unvaccinated people, and could spread it to other individuals.
“This finding is concerning and was a pivotal discovery leading to CDC’s updated mask recommendation,” CDC Director Dr. Rochelle Walensky said in a statement. “The masking recommendation was updated to ensure the vaccinated public would not unknowingly transmit virus to others, including their unvaccinated or immunocompromised loved ones.”
On Tuesday, the CDC reversed course on its prior guidance and recommended fully vaccinated Americans who live in areas with high Covid infection rates resume wearing face masks indoors. The guidelines cover about two-thirds of the U.S. population, according to a CNBC analysis.
While the delta variant continues to hit unvaccinated people the hardest, some vaccinated people could be carrying higher levels of the virus than previously understood and are potentially transmitting it to others, Walensky told reporters on a call Tuesday. She added the variant behaves “uniquely differently from past strains of the virus.”
A CDC document that was reviewed by CNBC warned that the delta variant sweeping across the country is as contagious as chickenpox, has a longer transmission window than the original Covid strain and may make older people sicker, even if they’ve been fully vaccinated.
Delta, now in at least 132 countries and already the dominant form of the disease in the United States, is more transmissible than the common cold, the 1918 Spanish flu, smallpox, Ebola, MERS and SARS, according to the document. Only measles appears to spread faster than the variant.
The data published Friday was based on 469 cases of Covid associated with multiple summer events and large public gatherings held in July in Barnstable County, Massachusetts, which encompasses Cape Cod and is just outside Martha’s Vineyard. The events were held in Provincetown, according to NBC News. Approximately three-quarters, or 74%, of the cases occurred in fully vaccinated people who had completed a two-dose course of the mRNA vaccines or received a single shot of Johnson & Johnson’s.
Overall, 274 vaccinated patients with a breakthrough infection were symptomatic, according to the CDC. The most common side effects were cough, headache, sore throat, muscle pain and fever. Among five Covid patients who were hospitalized, four were fully vaccinated, according to the agency. No deaths were reported.
Testing identified the delta variant in 90% of specimens from 133 patients.
While numerous studies have shown that the vaccines don’t work as well against the delta variant as they did against other strains, health officials say they are still highly effective, especially in protecting against severe illness and death. Roughly 97% of new hospitalizations and 99.5% of deaths in the U.S. are among unvaccinated individuals, U.S. health officials repeated this week.
The CDC also said the data has limitations. The agency noted that as population-level vaccination coverage increases, vaccinated persons are likely to represent a larger proportion of Covid cases. Additionally, asymptomatic breakthrough infections might be underrepresented because of detection bias, the agency said.
The CDC also said the report is “insufficient” to draw conclusions about the effectiveness of the authorized vaccines against Covid, including the delta variant, during this outbreak.