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Experts say XBB.1.5 is the most contagious SARS-CoV-2 variant currently in circulation. Here are common breakthrough symptoms to watch for.
A unique reported symptom of the Omicron variant is night sweats, [31] particularly with the BA.5 subvariant. [32] Also, loss of taste and smell seem to be uncommon compared to other strains. [33] [34]
XEC is an Omicron variant, Russo explains. But it has several mutations in the spike protein, which is what the virus uses to infect you. That can make XEC more contagious than previous variants ...
Here's what immunologists say.
In May 2022, a preprint indicated Omicron subvariants BA.4 and BA.5 could cause a large share of COVID-19 reinfections, beyond the increase of reinfections caused by the Omicron lineage, even for people who were infected by Omicron BA.1 due to increases in immune evasion, especially for the unvaccinated. However, the observed escape of BA.4 and ...
By Christmas 2021, the Omicron Strain became dominant in the US. [88] On 3 January 2022, South Korea reported the first two deaths of people who tested positive post mortem for Omicron. [89] In February 2022, Omicron accounted for 98% of publicly available genetic sequences worldwide. [90]
A smaller Omicron surge in spring is also possible.) [120] As it is, the variant is projected to become the dominant strain within a week. [121] The R number for Omicron in the UK is estimated to be between 3 and 5, Dr. Susan Hopkins, chief medical advisor at the UK Health Security Agency reported. The variant becomes the dominant strain in ...
Pirola, or BA.2.86, is the latest Omicron strain to appear this summer, sparking concern among experts because it has 34 more mutations, which could make it easier to evade vaccines.