Coronavirus disease, commonly known as COVID-19, is an infectious disease caused by a newly discovered virus called coronavirus or officially called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by the World Health Organization (WHO). The WHO has already declared coronavirus a pandemic because of its extensive and widespread scale of the outbreak. The United Nations, on the other hand, has categorized COVID-19 as the “worst global crisis” since World War II. The US, India, and Brazil are leading the tally of most infected countries.