COVID-19 (Coronavirus disease 2019) is an acute and infectious respiratory disease caused by the SARS-CoV-2 virus, a single stranded RNA virus from the Coronaviruses family.
SARS-CoV-2 emerged in 2019 and has been classified as a global pandemic since March 2020.
Symptoms can range from little or no symp- toms to severe illness or death.
The virus can spread from an infected person’s mouth or nose in small liquid particles when they cough, sneeze, speak, sing or breathe. These particles range from larger respiratory droplets to smaller aerosols.