CoronaVirus- What make it deadly?
CoronaVirus- What make it deadly? Coronavirus has exceptionally large single-stranded RNA genomes - approximately 26,000 to 32,000 bases or RNA "letters". Coronavirus particles are surrounded by a fatty outer layer, called an envelope and usually appearing spherical, as seen under an electron microscope, with a crown of club-shaped spikes or "corona" on their surface. Coronaviruses are a group of viruses that commonly cause mild diseases, such as the common cold. However, some types of coronaviruses can infect the lower airways, causing serious diseases such as pneumonia or bronchitis. Most people are infected with coronaviruses at some point in their lives and most of these infections are harmless. A notable exception is the new coronavirus that causes Kovid-19 disease. Covid -19 Third party image reference The virus that causes Covid-19 is known as SARS-CoV-2. It emerged for the first time in Wuhan, China in late 2019. The outbreak has since spread to China and ot...