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What is the main process of SARS-CoV-2 transmission?

COVID-19 is caused by a SARS-CoV-2, a coronavirus. Coronaviruses belong to the group of viruses with an envelope (lipid membrane), which also includes the flu virus. This lipid envelope makes enveloped viruses very susceptible to routinely used disinfection methods and soap. These types of viruses are spread from person to person through the water droplets caused by coughing or sneezing, or through contact with contaminated hands or surfaces, but for these viruses there is no known transmission via the urban waste water system. Therefore, the SARS-CoV-19 virus probably does not pose any risk to acquire COVID-19, and certainly no increased risk through the wastewater system, and RIVM and WHO (and other health services, such as US CDC) all indicate that normal protection and hygiene measures are adequate when working with sewage wastewater.

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