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The coronavirus could pass between people who are up to 6 feet apart, the CDC warns
insider@insider.com (Holly Secon)
Business InsiderMarch 3, 2020
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Workers in protective suits spray disinfectant as a precaution against the COVID-19 at an indoor gymnasium in Seoul, South Korea, on February 25.
Associated Press
Six feet. That's how far the Centers for Disease Control and Prevention (CDC) suggests you stay from anyone who might be sick.
That's because the viral particles travel between people in tiny droplets or saliva and mucus, which typically spread 3 to 5 feet. If a sick person sneezes, coughs, or eats within that distance of someone healthy, the particles could land on them; if the particles enter the person's eyes, nose, or mouth, the person can become infected.
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Scientists think the new coronavirus is carried in liquid droplets more than 5 micrometers in diameter. The common cold, which is also a coronavirus, travels in these big, wet droplets, too.
Scientists aren't sure whether the coronavirus also travels in smaller, drier droplets known as aerosols (which are less than 5 micrometers in diameter). Aerosols remain airborne for longer because of their size and are usually inhaled. Tuberculosis and measles are mainly transmitted through aerosols. Even if the coronavirus does travel in aerosols, though, it's not the main mechanism of transmission.
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A worker carrying disinfection equipment at the Budapest Liszt Ferenc International Airport in Budapest, Hungary.
Zoltan Balogh/MTI via AP
The wide range there depends on factors like the type of surface and temperature or humidity of the surrounding environment. (The length of time a virus survives on a surface also depends on what kind of droplet it's traveling in — saliva, phlegm, or aerosol.)
"But I will say on other surfaces — cardboard or plastic — it's longer, and so we are looking at this," Redfield added.
A review of 22 studies of other coronaviruses found that at room temperature, human coronaviruses could remain infectious on inanimate surfaces for up to nine days. But the paper also said the viruses could be rendered inactive by common disinfectants and temperatures higher than 86 degrees Fahrenheit.
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In addition, the CDC recommends that people exhibiting flu-like symptoms stay home. If a person with flu-like symptoms does need to go out, they should also wear a mask, the CDC says.
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The coronavirus imaged under a microscope.
BSIP/UIG Via Getty Images
The coronavirus has infected more than 89,000 people and killed more than 3,000 in total. Cases have been reported in at least 69 countries beyond China.
The US has reported nearly 100 coronavirus cases and six deaths.