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The drastic measures enforced by China during the coronavirus outbreak have slashed deadly air pollution, potentially saving the lives of tens of thousands of people, a Stanford University researcher said.

Tens of millions of people around the world have suddenly found themselves under various forms of lockdown as governments scrambled to impose new coronavirus-related restrictions over the past 24 hours.

When 18 contestants entered the German "Big Brother" house on February 6, an outbreak of the novel coronavirus was just starting to seep out of mainland China.

Treasury Secretary Steve Mnuchin says the airline industry is reeling from the impact of the novel coronavirus pandemic.

CNN's John Avlon shows how Trump's response to the novel coronavirus pandemic has changed as the number of cases continue to rise.

"This is a bad one. This is a very bad one." With those words, President Donald Trump pivoted to a more serious stance on the coronavirus outbreak in the US, acknowledging the grave reality of the situation and calling for national unity in a news conference where he unveiled a 15-day plan for social distancing and other measures designed to flatten the peak of infections.

UK Prime Minister Boris Johnson ramped up the country's response to the novel coronavirus pandemic after a weekend of confusion. The policy shift comes after Johnson's initial response came under public criticism. CNN's Phil Black reports.

Whether you're housebound for the next couple of weeks from a COVID-19 quarantine, or simply trying to survive a school or work shutdown, you'll likely be limiting or avoiding trips to the grocery store.

Factories were shuttered and streets were cleared across China's Hubei province as authorities ordered residents to stay home to stop the spread of the coronavirus.

As the COVID-19 pandemic continues to worsen, much attention in the US has been given to improving the availability of the diagnostic test.

As Chinese President Xi Jinping passed an apartment complex last week during his tour of Wuhan, ground zero of the global coronavirus pandemic, he looked up and waved back at rows of residents who -- still under lockdown -- greeted him behind masks from their apartment windows.

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Tom Hanks and Rita Wilson have been released from a Queensland hospital in Australia and are now in self-quarantine at their home there, a representative for Hanks told CNN on Monday.

The head of the World Health Organization has a simple message for all countries about who should be tested for coronavirus: "Test, test, test. Test every suspected case." Yet, the American medical system is scrambling to keep up with this directive.

The White House advised people not to gather in groups of more than 10 in a set of new guidelines to fight the coronavirus outbreak released Monday, as well as asked them to stay away from bars, restaurants and food courts, and to not travel if possible.

While Chicago's Shedd Aquarium has closed to the public due to the coronavirus pandemic, one Chicago resident was allowed a private tour: Wellington, the rockhopper penguin.

The few people still walking in Madrid's eerily empty parks on Monday were met by buzzing drones overhead, instructing them to: "Go home!"

UK Prime Minister Boris Johnson drastically ramped up the country's response to coronavirus on Monday, after a weekend of confusing briefings.

One chart explains how the sacrifices we're making and "social distancing" could be the most powerful solution we have in fighting epidemics.

Africa has so far recorded relatively few coronavirus cases compared to the rest of the world, but governments across the continent are taking no chances as they race to stop the spread of the virus on their shores.

France's health ministry has suggested that popular anti-inflammatory painkillers such as ibuprofen could worsen the effects of the coronavirus, raising questions over which over-the-counter drugs people should be taking to treat the symptoms of the disease.

Global aviation is shutting down in response to the coronavirus outbreak and many airlines will need government bailouts within weeks or face bankruptcy.

Pope Francis defied Italy's lockdown rules on Sunday afternoon as he left the Vatican to pray at a famous crucifix believed to have saved Romans from the plague in 1522.

• Top health official: Life will change in US

"We must respond with a wartime mentality." This was Mayor Bill de Blasio's message overnight to New Yorkers as he ordered bars and restaurants to close their doors in an effort to halt the spread of the coronavirus. Similar shutdowns are being imposed in other cities and states, from California to Massachusetts, and millions of Americans are waking up today to ever more stringent restrictions.

Classrooms will be empty from coast to coast in the coming weeks as the novel coronavirus spreads and officials say indefinite closures are a real possibility.

As the novel coronavirus pandemic continues to spread worldwide, police in Spain are urging citizens to avoid public places. CNN's Al Goodman reports.

CNN's David McKenzie reports from the settlements of Tembisa, South Africa, where following basic precautions to fight the novel coronavirus can be "unrealistic."

China's economy was devastated by the novel coronavirus outbreak in the first two months of the year, according to data published Monday, and analysts say the nightmare is far from over.

Some states are ordering the closure of bars and restaurants and hospitality giants Disney and MGM are shuttering their resorts as coronavirus continues to spread across the United States and officials try to contain it.

Amid a gradual shuttering of American society due to the spread of coronavirus, the two leading Democratic candidates for president debated Sunday night -- the first one-on-one debate of the election, between former Vice President Joe Biden and Vermont Sen. Bernie Sanders.

Joe Biden and Bernie Sanders clash over whether "Medicare for All" would improve health outcomes during the coronavirus pandemic

The US Centers for Disease Control and Prevention on Sunday recommended that no gatherings with 50 people or more take place for the next eight weeks in an effort to slow the spread of the novel coronavirus.

Once upon a time, reaching the highest peak on Earth was considered a feat achievable only by a select few.

In a bold, emergency action to support the economy during the coronavirus pandemic, the Federal Reserve on Sunday announced it would cut its target interest rate to zero.

As Americans are being urged to keep their distance from one another, travelers returning on flights from Europe say they are being made to wait for hours in close quarters at US airports to get screened for coronavirus.

A transatlantic cruise ship carrying more than 600 passengers with at least five confirmed coronavirus cases on board is frantically searching for somewhere to dock after it was refused entry at several Caribbean ports and now, the Bahamas.