With Alpha, Delta, Omicron, and more iterations, it’s normal to wonder how many COVID variants are there? Ahead, experts explain the evolution of COVID-19, and the latest variants of concern.

Two doses of a Covid vaccine are not enough to stop you catching the Omicron variant, UK scientists have warned. Early analysis of UK Omicron and Delta cases showed the vaccines were less ...

Since 2020, COVID-19 has surged across the nation and the world. With variants like Omicron, Delta, Alpha and more, this ...

Omicron vs. delta: Why it’s so hard to tell which COVID variant you have Many COVID-positive Americans are wondering which of the multiple variants they could be facing. The methods for figuring ...

Related stories In a petri dish, Omicron spread 70 times faster than Delta in tissue taken from human airways, which could explain why the variant spreads so quickly and overwhelms early immune ...

Dr. Leana Wen from George Washington University said the Omicron variant seems to be more contagious than the Delta variant in South Africa. It has at least 50 mutations, which could make existing ...

Dr Jessani told Business Insider India, “ It is not as severe as delta as per data available ... neutralisation resistance in another Omicron sub-variant called BQ.1. A higher neutralisation ...

It has been named Omicron by the World Health Organization, following the pattern of Greek code-names like the Alpha and Delta variants. Omicron has such a long list of mutations that it was ...

This has been observed before in previous variants, including Delta and Omicron recombinations. Preliminary analysis of XEC ...

The same held true for all the Greek-named variants, up to omicron. It's likely that most of these variants got their mutations by going into hiding. Instead of jumping from one host to another ...

Lambrou AS, Shirk P, Steele MK, et al. Genomic surveillance for SARS-CoV-2 variants: predominance of the delta (B.1.617.2) and omicron (B.1.1.529) variants — United States, June 2021–January 2022.

COVID-19 survivors may develop autoimmune conditions long-term, with risks varying by severity and vaccination status, ...