As per World Health Organization, COVID-19 and SARS (Severe Acute Respiratory Syndrome) are not the same diseases. The virus that causes these both diseases are related to each other genetically. But the diseases they cause, both COVID-19 and SARS are different as COVID-19 is more infectious than SARS though SARS was more deadly. SARS was outbroke in 2003 and then there is no evidence of its outbroke until now but COVID-19 was outbroke in 2019 and still countinuing to spread globally.