COVID-19 is an infectious disease that is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
On December 31, 2019, the World Health Organization (WHO) was informed of several cases of viral pneumonia of unknown cause detected in Wuhan City, China. The outbreak quickly evolved, affecting other parts of China and many countries around the globe. The first mystery disease was first called 2019-Novel Coronavirus or NCOV, and later on became Coronavirus Disease or COVID-19.
The new coronavirus spreads through droplets from an infected person who coughs or sneezes. People of all ages, both female and male, can be infected by this virus. People having pre-existing diseases like asthma, heart diseases and diabetes appear to be the most vulnerable to becoming severely ill.
Patients Under Investigation (PUI) and Persons Under Monitoring (PUM) are the two terms that are often used whenever COVID 19 is reported. People who have a history of travel from outside the country within 14 days before they feel the symptoms, having close contact with the person having symptoms and a member of a positive cluster of patients are called Patient Under Investigation (PUI). On the other hand, a person is considered as a Person Under Monitoring when he/she is not showing any symptoms related to the disease but has a travel history and a history of exposure to the novel virus.
