Most viruses are many times smaller than bacteria, though giant viruses … Almost everyone gets a coronavirus infection at least … It may be spread by respiratory droplets when someone coughs or sneezes. A coronavirus is a type of common virus that can infect your nose, sinuses, or upper throat. Other viruses may present too big a challenge. Some non-enveloped viruses, such as the polio virus, create a porous channel of entry and burrow through the membrane. Virus particles are about one-millionth of an inch (17 to 1,000 nanometers) long [source: Milo and Phillips]. This virus … Medicines to treat viruses exist. The new virus appears to be spreading from person to person. Some, for example, block the entry of a virus … The body can rid itself of many viruses on its own. Called antivirals, they work in different ways. Another enveloped virus, the influenza virus, is engulfed by the cell. Like a real virus, however, a computer virus can infect — and even hijack — its host computer.) But it's unclear exactly how it spreads or how contagious it is. COVID-19 is a new strain of coronavirus that has not been previously identified in humans. They can spread much like cold viruses. Since … If you could look at a virus, you would see that a virus is a tiny particle. Research is ongoing. The COVID-19 is the cause of an outbreak of respiratory illness first detected in Wuhan, Hubei province, China.