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As COVID-19 activity remains high in the United States, a new variant called XEC has emerged and is spreading rapidly in Europe and other parts of the world.
The new boosters have been reformulated to target omicron XBB.1.5, which was the dominant COVID variant for most of 2023. While XBB.1.5 has since been overtaken by HV.1 and other variants, it is ...
HV.1 is the latest COVID-19 variant of concern. Here, experts explain the spreading subvariant, including symptoms, prevention, treatment, and more.
SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105] Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). [106] [107] Coronaviruses undergo frequent recombination. [108]
As of September 28, 2024, a new subvariant of Omicron labeled XEC has emerged. The new variant is found in Europe, and in 25 states in the United States of America, including three cases in California. [14] Three doses of a COVID-19 vaccine provide protection against severe disease and hospitalisation caused by Omicron and its subvariants.
BA.2.86 was first reported by Denmark and Israel. [1] [11] On 18 August 2023, when only six cases had been reported from four countries (Denmark, Israel, the United Kingdom and the United States), the British healthcare authorities noted that its almost simultaneous appearance in several countries still operating detailed genomic surveillance indicated that it likely already was spreading more ...
A new group of COVID-19 variants called "FLiRT" are spreading in the United States and driving an increasing proportion of cases, sparking concerns about potential summer wave.
In September 2012, a new type of coronavirus was identified, initially called Novel Coronavirus 2012, and now officially named Middle East respiratory syndrome coronavirus (MERS-CoV). [ 109 ] [ 110 ] The World Health Organization issued a global alert soon after. [ 111 ]