English, asked by jyoti56799, 5 months ago

essay on public health response to covid 19​

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Answered by omprakashverma19625
4

Answer:

The WHO recognised the spread of COVID-19 as a pandemic on 11 March 2020 as Italy, Iran, South Korea, and Japan reported surging numbers of cases. Later that month, the number of cases outside of China quickly surpassed the number of cases inside China.Although persistence in drinking-water is possible, there is no evidence from surrogate human coronaviruses that they are present in surface or groundwater sources or transmitted through contaminated drinking water. The COVID-19 virus is an enveloped virus, with a fragile outer membrane. Generally, enveloped viruses are less stable in the environment and are more susceptible to oxidants, such as chlorine. While there is no evidence to date about survival of the COVID-19 virus in water or sewage, the virus is likely to become inactivated significantly faster than non-enveloped human enteric viruses with known waterborne transmission (such as adenoviruses, norovirus, rotavirus and hepatitis A).

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