Question

Q9) What does 19 in COVID-19 mean? Give brief description about 229E ,NL63,0C43 &HKUI ?​

Answer 1

COVID-19 means that CorOna Virus In December -2019.....

Thats means 19 is the yrs in which it is infected....

Answer 2

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19 in Covid-19 is 2019 as this disease came in 2019......

• Human coronavirus 229E is a species of coronavirus which infects humans and bats. The infecting virus is an enveloped, positive-sense, single-stranded RNA virus which enters its host cell by binding to the APN receptor. Along with Human coronavirus OC43, it is one of the viruses responsible for the common cold. 

• Human coronavirus NL63 or HCoV-NL63 is a species of coronavirus that was identified in late 2004 in a seven-month-old child with bronchiolitis in the Netherlands. The infecting virus is an enveloped, positive-sense, single-stranded RNA virus which enters its host cell by the ACE2 receptor.