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On July 27, based on updated information for fully vaccinated people that new evidence on the Delta variant had provided, CDC added a recommendation for those people to wear a mask in public indoor settings in areas of substantial or high transmission. CDC also made other recommendations based on this information. [52]
[122] [123] Preliminary data from a study with 100,000 volunteers in the UK from May to July 2021, when Delta was spreading rapidly, indicates that vaccinated people who test positive for COVID-19, including asymptomatic cases, have a lower viral load in average. Data from the US, UK, and Singapore indicate that vaccinated people infected by ...
More and more cases of omicron are being detected in the U.S. but the delta variant is still driving the cases in the country.
A study of samples collected in Manaus between November 2020 and January 2021, indicated that the Gamma variant is 1.4–2.2 times more transmissible and was shown to be capable of evading 25–61% of inherited immunity from previous coronavirus diseases, leading to the possibility of reinfection after recovery from an earlier COVID-19 ...
During the Delta spike of the summer of 2021, nationwide hospitalizations for COVID-19 topped 100,000. A year later, the Omicron wave hospitalized 16,000 people across the country. Today’s ...
Here’s what to know about the new COVID-19 vaccine coming this fall, and the CDC’s updated guidelines on COVID shots for 2024 and 2025.
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On July 23, 2021, the city's health department announced that daily average cases were 32% higher than the prior week and that the Delta variant had become the dominant COVID strain, accounting for 57% of citywide samples over a four-week period. Mayor Bill de Blasio responded to the new data by pleading with private employers to "move ...