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The Delta variant (B.1.617.2) was [3] [4] a variant of SARS-CoV-2, the virus that causes COVID-19. It was first detected in India on 5 October 2020. The Delta variant was named on 31 May 2021 and had spread to over 179 countries by 22 November 2021.
Weekly confirmed COVID-19 deaths Map of cumulative COVID-19 death rates by US state. [1]The CDC publishes official numbers of COVID-19 cases in the United States. The CDC estimates that, between February 2020 and September 2021, only 1 in 1.3 COVID-19 deaths were attributed to COVID-19. [2]
Weekly confirmed COVID-19 deaths Map of cumulative COVID-19 death rates by U.S. state [8] On December 31, 2019, China announced the discovery of a cluster of pneumonia cases in Wuhan. The first American case was reported on January 20, [9] and Health and Human Services Secretary Alex Azar declared a public health emergency on January 31. [10]
Covid patient loads are up in all but two states, increasing the burden on hospitals, as the omicron variant spreads. Map: Covid hospitalizations up more than double in a third of the country Skip ...
In September 2022, the United States Food and Drug Administration (FDA) authorized the bivalent vaccines. [345] [346] [347] In June 2023, the FDA advised manufacturers that the 2023–2024 formulation of the COVID‑19 vaccines for use in the US be updated to be a monovalent COVID‑19 vaccine using the XBB.1.5 lineage of the Omicron variant.
The continued spread of the SARS-CoV-2 virus has spawned a Greek alphabet of variants - a naming system used by the World Health Organization to track concerning new mutations of the virus that ...
By March 5, more than 2,750 cases of COVID-19 variants were detected in 47 states; Washington, D.C.; and Puerto Rico. This number consisted of 2,672 cases of the B.1.1.7 variant, 68 cases of the B.1.351 variant , and 13 cases of the P.1 variant .
The United States will not lift any existing travel restrictions "at this point" due to concerns over the highly transmissible COVID-19 Delta variant and the rising number of U.S. coronavirus ...