The Coronavirus Outbreak

Key developments you may have missed.

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How New Cases Are Changing by Day

See all new cases around the world

Frequently Asked Questions

Outdoor gatherings lower risk because wind disperses viral droplets, and sunlight can kill some of the virus. Open spaces prevent the virus from building up in concentrated amounts and being inhaled, which can happen when infected people exhale in a confined space for long stretches of time, said Dr. Julian W. Tang, a virologist at the University of Leicester.

In the beginning, the coronavirus seemed like it was primarily a respiratory illness — many patients had fever and chills, were weak and tired, and coughed a lot, though some people don’t show many symptoms at all. Those who seemed sickest had pneumonia or acute respiratory distress syndrome and received supplemental oxygen. By now, doctors have identified many more symptoms and syndromes. In April, the C.D.C. added to the list of early signs sore throat, fever, chills and muscle aches. Gastrointestinal upset, such as diarrhea and nausea, has also been observed. Another telltale sign of infection may be a sudden, profound diminution of one’s sense of smell and taste. Teenagers and young adults in some cases have developed painful red and purple lesions on their fingers and toes — nicknamed “Covid toe” — but few other serious symptoms.

The coronavirus spreads primarily through droplets from your mouth and nose, especially when you cough or sneeze. The C.D.C., one of the organizations using that measure, bases its recommendation of six feet on the idea that most large droplets that people expel when they cough or sneeze will fall to the ground within six feet. But six feet has never been a magic number that guarantees complete protection. Sneezes, for instance, can launch droplets a lot farther than six feet, according to a recent study. It's a rule of thumb: You should be safest standing six feet apart outside, especially when it's windy. But keep a mask on at all times, even when you think you’re far enough apart.

As of right now, that seems likely, for at least several months. There have been frightening accounts of people suffering what seems to be a second bout of Covid-19. But experts say these patients may have a drawn-out course of infection, with the virus taking a slow toll weeks to months after initial exposure. People infected with the coronavirus typically produce immune molecules called antibodies, which are protective proteins made in response to an infection. These antibodies may last in the body only two to three months, which may seem worrisome, but that’s perfectly normal after an acute infection subsides, said Dr. Michael Mina, an immunologist at Harvard University. It may be possible to get the coronavirus again, but it’s highly unlikely that it would be possible in a short window of time from initial infection or make people sicker the second time.

Employers have to provide a safe workplace with policies that protect everyone equally. And if one of your co-workers tests positive for the coronavirus, the C.D.C. has said that employers should tell their employees -- without giving you the sick employee’s name -- that they may have been exposed to the virus.

Maps and Trackers

  1. Photo

    Coronavirus Vaccine Tracker

    A look at all the vaccines that have reached trials in humans.

    By Jonathan Corum, Sui-Lee Wee and

  2. PhotoWashington D.C. and 11 states meet the target.

    Is Your State Doing Enough Coronavirus Testing?

    The number of daily coronavirus tests conducted in the United States is only 67 percent of the level necessary to mitigate the spread of the virus, according to estimates by researchers at the Harvard Global Health Institute.


School Reopenings

  1. PhotoIn-person classes were originally set to begin on Sept. 10. 
    CreditJames Estrin/The New York Times

    N.Y.C. Delays In-Person Classes for Most Students a Second Time

    Mayor Bill de Blasio halted plans to begin in-person classes for all New York City public schools, shifting to a phased reopening schedule starting with pre-K and students with advanced special needs.



  1. PhotoPeople waiting for help with unemployment claims in Tulsa, Okla., last month.
    CreditJoseph Rushmore for The New York Times

    $300 Unemployment Benefit: Who Will Get It and When?

    Forty-nine states, Washington, D.C., and two territories have so far signed on to President Trump’s stopgap program to get more money to the jobless. Here’s how it works.

    By Patricia Cohen and

Lives We've Lost

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