What is COVID-19: A Contagious Respiratory Illness Explained

COVID-19, also known as the coronavirus disease, is a highly infectious respiratory illness caused by the novel coronavirus, SARS-CoV-2. First identified in December 2019 in Wuhan, China, it has spread globally, leading to a pandemic. The virus primarily spreads through respiratory droplets released when an infected person coughs, sneezes, or talks. It can also be transmitted by touching contaminated surfaces and then the face. COVID-19 symptoms range from mild to severe and can appear within 2-14 days after exposure. Common symptoms include fever, cough, fatigue, sore throat, and loss of taste or smell. Some individuals may be asymptomatic, making it challenging to identify and control the spread. The disease can be particularly severe for older adults and those with underlying health conditions, leading to complications like pneumonia and organ failure, and in some cases, death. To prevent the spread of COVID-19, measures like social distancing, mask-wearing, hand hygiene, testing, and contact tracing have been implemented globally. Vaccines have been developed and are being administered worldwide to control the spread and severity. However, the emergence of new variants poses ongoing challenges in managing the pandemic.