Scientists from China said they've identified two strains of COVID-19 linked to the recent outbreak.
Scientists from China said they've identified two strains ofCoronaviruses are a large family of RNA viruses, and when RNA viruses replicate quickly, they often mutate.
Researchers analyzed 103 sequenced genomes using strains from China, and found that 70% of strains were one type, which they called"L." The"L" strain was more aggressive than the remaining 30% of strains, which were dubbed"S."The first strain was more common at the beginning of the outbreak, in Wuhan, China, but its frequency decreased after early January.
A man wearing a face mask uses an escalator in the financial district of Lujiazui in Shanghai, March 4, 2020. A man wearing a face mask uses an escalator in the financial district of Lujiazui in Shanghai, March 4, 2020.National Science ReviewThe scientists only analyzed strains from China, so more information is needed about strains from other countries to determine whether the same viruses have spread worldwide.
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