1 in 4 people who get the coronavirus may show no symptoms but still be contagious. Here's the latest research on asymptomatic carriers.

AP Photo/Mark Lennihan

• The coronavirus has infected more than 1 million people worldwide in three months. Scientists are racing to discover how it spreads so quickly.
• According to the director of the CDC, 1 in 4 people may be asymptomatic carriers — people who are contagious but not physically sick.
• These carriers are thought to play a significant role in the virus' spread, and are the reason that the general public in the US will likely be asked to start wearing face masks.
• Visit Business Insider's homepage for more stories.

At least one-third of the world is under some type of lockdown due to the coronavirus pandemic, as governments urge social distancing to stymie the virus' spread. 

That's because the COVID-19 virus is insidious.

See the rest of the story at Business Insider

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See Also:

• New research sheds light on how the coronavirus travels through the air — you probably won't walk through virus 'clouds,' but healthcare workers are at risk
• New data reveals coronavirus hotspots brewing across the south, where the pandemic is set to 'hit hard'
• A new type of coronavirus test could turn the tide by revealing who has already recovered. Those immune people could go back to work first.

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