Some are believed, or have been stated, to be of particular importance due to their potential for increased transmissibility, increased virulence, or reduced effectiveness of vaccines against them. The COVID-19 pandemic has essentially become the Delta pandemic, as the variant accounts for more than 90% of global cases. How many variants of the coronavirus are there? A new strain of coronavirus is a "variant of concern," the World Health Organization announced Friday. The United States has more than 25 million confirmed cases of COVID-19, according to data from Johns Hopkins University. There are many COVID variants circulating around the world, but health experts are primarily concerned with the emergence of three. Elisabeth Mahase reviews the line-up so far Considered a variant of concern by the World Health Organization, alpha was first identified in Kent in the UK in September 2020 and drove the UK's second wave. The main differences idenfified in the Delta variant show that those infected have a tendency to get sick more quickly and . How many variants of the coronavirus are there? mutates as it spreads and many new . ECDC regularly assesses new evidence on variants detected through epidemic intelligence, rules-based genomic variant screening, or other scientific sources. The Alpha variant, previously the most . Omicron is the 15th letter in the Greek alphabet, and there are only 24 letters. Variants of SARS-CoV-2, the virus that causes COVID-19, have been reported in many countries around the world. Nation World Questions answered on new COVID-19 variant in South Africa . Some mutations can be harmful to a virus, causing it to die out. On 11 May 2021, WHO declared it as a Variant of Concern (VOC) and named it Delta on . The United States has more than 25 million confirmed cases of COVID-19, according to data from Johns Hopkins University. Luckily, there are currently no COVID-19 variants in this category. Continued. As of Thursday, the U.S. had more than 4297,000 deaths from the virus . For the most part of the COVID-19 pandemic, it was a struggle for the layman to remember the names of virus variants. As a virus infects people, it can mutate as it makes copies of . Also known as B.1.617.2, the delta variant was first identified in India and is now the responsible for most COVID cases in the U.S. The number of daily infections in Africa's hardest-hit country has increased tenfold since the start of the month. By Vimal Patel. This variant is now the most common COVID-19 variant in the U.S. It's nearly twice as contagious as earlier variants and might cause more severe illness. An estimated 83% of new cases came from the more transmissible strain of the virus during the two weeks ending July 17. The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its . In fact, variants have continued to develop and spread since the emergence of delta. There is a concern that with another variant, the COVID-19 vaccines might not work as well to prevent people from getting sick with COVID-19. Learn more about the current variants of concern. Despite the world's familiarity with different types of coronaviruses, COVID-19 is known as a "novel" coronavirus.

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