Mutation novel Coronavirus infection increased by 40%-70% in UK

On 22 local time, WHO released information on novel Coronavirus reported in the UK. On 14 December, the United Kingdom reported to WHO that a new novel Coronavirus variant had been discovered through viral gene sequencing. Preliminary analysis showed that the variant was more likely to spread from person to person, with an estimated 40 to 70 percent increase in infectivity and 0.4 in the transmission index between 1.5 and 1.7. As of December 13, 1,108 cases of the mutated virus had been detected in the UK.
This follows an unexpected increase in COVID-19 cases in south-east England, which was identified in an epidemiological study and virological investigation earlier in December. During 5 October solstice and 13 December, the notification rate of new cases in 14 days more than quadrupled. Since the outbreak of the epidemic, routine sequencing of 5 to 10 per cent of novel Coronavirus cases has been started in the UK and 4 per cent of novel Coronavirus cases in the south-east of England. During 5 October solstice and 13 December, more than 50% of the strains in the south-east of England were of this variant. Retrospective studies found that the variant first appeared on 20 September in Kent, south-east England, with most cases under the age of 60.
Who recommends that further epidemiological and virological research be undertaken to understand changes in the infectivity and pathogenicity of the mutated virus. Who recommends that all countries, wherever possible, add routine sequencing of novel Coronavirus and share virus genetic sequence data, in particular to report whether the same mutated virus has been found. All countries need to assess local levels of virus transmission and take appropriate prevention and control measures.

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