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Il Sudafrica ha probabilmente superato il picco dei casi di COVID di Omicron, Indicando un'onda più corta per gli Stati Uniti.

Il Sudafrica ha probabilmente superato il picco dei casi di COVID di Omicron, Indicando un'onda più corta per gli Stati Uniti.

South Africa appears to have passed the peak of COVID-19 infections from the omicron wave, researchers said. It could be an indication that the variant moves quickly before dying down, providing a timeline for the U.S. as cases ramp up.

After detecting their first case of the omicron variant in late November, South Africa hassurpassed the peak of the Omicron wave now, driven by the significant decline in the populous province and epicenter: Gauteng,” Ridhwaan Suliman, senior researcher at the South African Council for Scientific and Industrial Research, told CNN on Wednesday.

The country saw their highest case total of 27,000 new infections on Thursday, and numbers have since dropped down to 15,424 martedì. And in the Gauteng province, South Africa’s largest with 16 million people and the city of Johannesburg, cases dropped even earlier, a trend that has continued in the week since.

A second researcher, from the Vaccines and Infectious Diseases Analytics department of the University of Witwatersrand, noted the same trend to the Associated Press.

The drop in new cases nationally combined with the sustained drop in new cases seen here in Gauteng province, which for weeks has been the center of this wave, indicates that we are past the peak,” said senior researcher Marta Nunes.

South Africa’s experience with omicron could predict the next few weeks of spread in the U.S., where cases with the variant are now dominating. If South Africa’s trend holds, gli Stati Uniti. could see a peak in cases in January before dying down.

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Gli Stati Uniti. Centers for Disease Control said Monday that between Dec. 12 e 18, omicron made up 73% of all new COVID-19 cases in the country, a major jump from the week prior when it accounted for just 12%.

Omicron appears to cause more breakthrough infections in people who are vaccinated against COVID-19 than previous variants like delta. A large, real-world study of COVID-19 patients in South Africa found that Pfizer’s two-dose vaccine is just 30% effective at preventing infection with omicron, a significant drop from the 80% protection it had against earlier variants.

però, Pfizer’s vaccine was still highly effective in preventing severe illness from omicron. The two-dose series still protected people from needing hospitalization 70% of the time; “very good protection,” the study authors said. And in a study from the U.K., a booster dose significantly increased protection, pushing the effectiveness at preventing infection to 75%.

Lo scorso mese, il CDC ha ampliato le sue raccomandazioni di richiamo del vaccino per gli americani in seguito al arrival of omicron in Nord America.

La diffusione della variante “sottolinea ulteriormente l'importanza della vaccinazione, booster, e gli sforzi di prevenzione necessari per proteggersi dal COVID-19,” il CDC ha detto. “I primi dati dal Sud Africa suggeriscono una maggiore trasmissibilità della variante Omicron, e scienziati negli Stati Uniti e in tutto il mondo stanno esaminando con urgenza l'efficacia del vaccino relativo a questa variante.”

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