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The crisis aboard the quarantined Diamond Princess cruise ship in Japan shows how germs can spread rapidly through air conditioning systems that can't filter out particles as small as the new coronavirus, one air quality expert says.

The quarantine ended last Wednesday, but not before the number of coronavirus cases reached 690 and three deaths were reported, according to the Asso...

A coronavirus outbreak on American soil is now all but a certainty, U.S. health officials warned Tuesday.

"As more and more countries experience community spread, successful containment at our borders becomes harder and harder. Ultimately, we expect we will see community spread in this country," Dr. Nancy Messonnier, director of the U.S. National Center for Immunization and Respirator...

A coronavirus pandemic looked ever more likely on Monday as multiple countries around the world raced to stem outbreaks of "untraceable" cases of the virus.

Clusters of cases arising in South Korea, Italy and Iran with no clear ties to outbreak's epicenter in China have heightened concerns about local, self-sustaining epidemics and a global pandemic. In a pandemic, outbreaks occur on ...

The chances of a coronavirus pandemic continued to climb Sunday as multiple countries around the world raced to stem outbreaks of "untraceable" cases of the virus.

Clusters of cases arising in South Korea, Italy, Iran and Canada with no clear ties to outbreak's epicenter in China have heightened concerns about local, self-sustaining epidemics and a global pandemic. In a pandemic, out...

Outbreaks of "untraceable" cases of coronavirus in multiple countries around the world are raising the real possibility of a pandemic, public health experts say.

Clusters of cases arising in South Korea, Iran, Italy and Canada with no clear ties to the outbreak's epicenter in China have boosted concerns about local, self-sustaining epidemics and a global pandemic.

As reporte...

The number of coronavirus cases among Americans jumped to 34 Friday, as U.S. health officials reported that more passengers who were evacuated from a quarantined cruise ship in Japan have tested positive for the virus.

"We have 13 U.S. cases, versus 21 cases among people who were repatriated," Dr. Nancy Messonnier, director of the U.S. National Center for Immunization and Respiratory ...

The number of new COVID-19 coronavirus cases in China dropped Thursday, but the decline might just be due to new methods in how case numbers are tallied.

Also on Thursday, two infected passengers from the Diamond Princess cruise ship that had been quarantined in Japan died.

The decline in Chinese cases was due in part to Chinese health officials again changing how they tally...

As the number of coronavirus cases reached 75,000 and deaths topped 2,000, a two-week quarantine of a cruise ship docked in Japan ended Wednesday.

About 300 Americans were recently evacuated from the Diamond Princess over the weekend and are already under quarantine in the United States. Fourteen of those evacuees have tested positive for the new COVID-19 virus.

More than 10...

New details on nearly 45,000 cases of COVID-19 coronavirus in China show that 80% of cases are mild and the number of new cases has been declining for most of February.

The report, released Monday by the Chinese Center for Disease Control and Prevention, offers some hope that the outbreak might be abating, the Associated Press reported.

Still, "it's too early to ...

Hospitals are bracing for the potential spread of coronavirus in the United States, trying to plan for a potential onslaught of sick patients combined with potential supply shortages.

The strict quarantine and screening measures enacted by the U.S. Centers for Disease Control and Prevention have given hospitals breathing space to review their pandemic plans and stockpile needed equip...

Fourteen of the more than 300 U.S. passengers evacuated from a cruise ship hit by the coronavirus outbreak have tested positive for infection during their flights home, U.S. health officials said Monday.

The news comes from a joint statement from the Departments of State and Health and Human Services, CNN reported. The 14 passengers aboard the Diamond Princess, docked in Yoko...

The COVID-19 coronavirus outbreak -- and the global response to it -- continues to evolve, with the first death outside Asia reported in France on Saturday.

Also on Saturday, U.S. health officials announced that a chartered flight will arrive on Sunday to evacuate 400 American passengers stranded on a cruise ship docked in Japan.

The passengers on board the Diamond Princess...

Coronavirus is most infectious when patients are at the peak of their illness, U.S. health officials said Friday.

"Based on what we know now, we believe this virus spreads mainly from person to person among close contacts, which is defined as about six feet, through respiratory droplets produced when an infected person coughs or sneezes," Dr. Nancy Messonnier, director of the National...

With stories about the new coronavirus outbreak flooding the media, it's easy to get scared. And if you're scared, your kids might be, too -- but they don't have to be.

Honesty and directness are key when talking to your child about this new virus, said Diane Bales, associate professor of human development and family science at the University of Georgia, in Athens.

To reliev...

After charting a slight decline in spread earlier this week, new coronavirus cases in China jumped by almost 15,000 in a single day, while the death count spiked to 1,367, Chinese health officials reported Thursday.

Meanwhile, the U.S. Centers for Disease Control and Prevention announced that two new cases have been confirmed in this country, upping the total from 13 to 15.

...

There's some good news about the new coronavirus: Preliminary research suggests that the virus cannot be transmitted from an infected pregnant woman to the fetus.

The researchers stressed that the study population was small -- just nine pregnant women -- and a number of other factors mean questions linger when it comes to maternal-fetal transmission.

For the study, the rese...

Young people with HIV have much lower rates of viral suppression than adults with the AIDS-causing virus, a new U.S. study finds.

Viral suppression means that HIV has been reduced to undetectable levels. Maintaining viral suppression for at least six months prevents the sexual transmission of HIV and helps people with the virus remain healthy.

Researchers assessed more than ...

While the number of new cases of coronavirus in China slowed on Wednesday, the death count has now risen to 1,113, Chinese health officials reported.

Those totals far exceed the toll of the 2003 SARS outbreak, in which 8,098 were infected and 774 died worldwide, the Associated Press reported. On Tuesday, the World Health Organization (WHO) also gave the infamous virus a new nam...

A deadly virus that's surging through a foreign country makes its way into the United States, carried into this country by an unwitting traveler.

In response, Americans panic, convinced the pathogen will soon sweep through the nation -- even though only a handful of people in the United States have fallen ill.

That may sound like the current state of affairs with the new cor...

More than 1,000 deaths and close to 43,000 illnesses have now been confirmed in the coronavirus outbreak that continues to rage in China, while a 13th U.S. case was reported late Monday.

Those totals far exceed the toll of the 2003 SARS outbreak, in which 8,098 were infected and 774 died worldwide, the Associated Press reported.

The latest American case involved one o...

As millions in China scramble to find and wear face masks they believe will protect them against the new coronavirus, many Americans are trying to do the same.

In a new survey conducted by the National Community Pharmacists Association (NCPA), nearly two-thirds (63%) of U.S. pharmacists said they've had customers buy surgical masks as a precaution against coronavirus, and nearly a...

The coronavirus outbreak that is raging in China continued to spread Monday, with just over 40,000 cases and 908 deaths now confirmed.

Those numbers far exceed the toll of the 2003 SARS outbreak, in which 8,098 were infected and 774 died worldwide, the Associated Press reported.

Outside China, more than 440 cases have been reported, including two deaths.

As ...

A 60-year-old man living in Wuhan, China, has become the first American citizen to die from the new coronavirus that first surfaced in the Chinese city.

The man, whose name has not been disclosed, died Thursday at Jinyintian Hospital in Wuhan, the U.S. Embassy in China said Saturday. According to the Washington Post, the embassy issued a statement with "our sincerest condolenc...

In a report released Friday, federal public health officials outline how they screened about 650 people in the United States for the new Chinese coronavirus since the outbreak began late last year.

About 30 doctors and nurses with the U.S. Centers for Disease Control and Prevention responded to inquiries about those individuals and recommended further testing for 256 across 34 differe...

More Americans were evacuated from the epicenter of the coronavirus outbreak in China late Thursday, as the number of cases worldwide surpassed 31,000.

Two chartered planes carrying about 300 Americans have left Wuhan, the U.S. State Department said Thursday night. Both flights will stop at Travis Air Force base in northern California, the Associated Press reported.

A...

Folks fretting about the coronavirus are forgetting there's another virus already running rampant in the United States, one that's killed nearly 20 times as many people in this country alone.

Influenza has already taken the lives of 10,000 Americans this season, according to the U.S. Centers for Disease Control and Prevention. At least 19 million have caught the flu, and an estimated ...

More Americans are expected to be evacuated from the epicenter of the coronavirus outbreak in China, as U.S. health officials reported a 12th domestic case of coronavirus late Wednesday.

Earlier Wednesday, two planes carrying 350 Americans landed at an Air Force base in California. Some of those passengers were then flown to Marine Corps Air Station Miramar near San Diego. Both groups...

About 350 Americans who were evacuated Tuesday from the epicenter of the coronavirus outbreak in China landed at an Air Force base in California Wednesday morning.

Two planes were involved in this latest evacuation, and some of the Americans on those flights will be quarantined for 14 days at Travis Air Force Base in Northern California, the Associated Press reported.

While health experts fear that the coronavirus outbreak in China will become a pandemic as infections topped 20,600 worldwide, the second death outside China was reported in Hong Kong on Tuesday.

On Monday, U.S. officials reported three more cases in California, bringing the total in this country to 11.

A pandemic, which is when there are epidemics occurring on two or more c...

The U.S. government aims to end the HIV epidemic by 2030, but skyrocketing medication costs may make that a pipe dream, a new study suggests.

Since 2012, the cost of antiviral treatment for HIV, the virus that causes AIDS, has jumped 34%. That's nearly four times the inflation rate.

Even with new generic options, initial treatments now top $36,000 per patient per year,...

While health experts fear that the coronavirus outbreak in China will become a pandemic as infections topped 17,000 worldwide, U.S. officials reported three more cases in California, bringing the total in this country to 11.

A pandemic, which is when there are epidemics occurring on two or more continents, is looking more likely by the day, as the World Health Organization (WHO) repor...

A mad dash is afoot to craft a vaccine for the new coronavirus that's ravaging China and starting to spread across the globe, with possibly dozens of labs working on permanent protection against the pathogen.

Researchers say an effective vaccine could be created in a matter of weeks, using advanced techniques.

"We know enough. We can do this. We can actually make a vaccine i...

The United States will temporarily bar entry to any foreigners who have recently traveled to China because of a coronavirus outbreak in that country that has sickened nearly 14,000 and killed just over 300.

Since Friday, the U.S. Centers for Disease Control and Prevention has confirmed two more U.S. cases of coronavirus, bringing the total to eight. The seventh case is a man from Cali...

The United States said Friday it will temporarily bar entry to any foreigners who have recently traveled to China because of a coronavirus outbreak in that country that has sickened nearly 12,000 and killed just over 250.

On the same day, the U.S. Centers for Disease Control and Prevention confirmed a seventh case of coronavirus in a man from California who had recently traveled to W...

Nearly 76,000 people in the city of Wuhan, China, may have already been infected with the new coronavirus, an estimate that is far higher than the number of cases reported so far, researchers say.

On Friday, Chinese health officials said nearly 10,000 cases of the virus called 2019-nCoV have been reported, with 213 deaths at this point. The World Health Organization declared the outbr...

As China races to stem the spread of a new coronavirus that has now infected nearly 10,000 people and killed more than 200, researchers report that a novel approach to gene sequencing could help monitor coronaviruses more effectively.

Coronaviruses in bats have been linked to the outbreak from the virus labeled 2019-nCoV, as well as outbreaks of diseases like SARS and MERS.

...

Coronavirus is all over the news, and people are talking about the latest outbreak that started in China and appears to be rapidly spreading to other countries.

It's happened before. Ebola. MERS. SARS. All are dangerous diseases that took lives, but the widespread panic about these illnesses affected millions more. So, how can you stay calm when these threats arise, and how can you k...

The United States issued its highest travel alert for China on Thursday night, advising all Americans to avoid travel to that country because of a coronavirus outbreak that has now sickened nearly 10,000 and killed just over 200.

The advisory came just hours after the World Health Organization declared the coronavirus outbreak an international public health emergency and the United St...

The World Health Organization declared the Wuhan coronavirus outbreak an international public health emergency on Thursday, as the United States reported its first case of person-to-person transmission of the virus.

The declaration states that the world's top health advisory body thinks the situation is grave, The New York Times reported. Countries can then make their own decis...

The dreaded coronavirus in China has many reaching for face masks across the globe.

But while mandatory in Wuhan, China, where the virus originated, a face mask is of little use, practically speaking, some experts say.

"A surgical mask might provide some protection, but it's going to be very modest," said Dr. William Schaffner, a professor of preventive medicine at Vanderbi...

The coronavirus that has rapidly infected nearly 6,000 people in China is spreading across the globe, with five cases confirmed in the United States.

The death toll in China so far has topped 130.

Here's what else you should know about the new coronavirus, called 2019-nCoV, which originated in the city of Wuhan:

"This is a new virus that has not been previously ...

As Chinese health officials fight to contain a coronavirus outbreak that has sickened nearly 6,000 and killed 132, British researchers have mapped out which international cities are most vulnerable to its spread.

While the greatest risk for infection with what is now dubbed 2019-nCoV are the cities of Bangkok, Hong Kong and Taipei, that doesn't mean other cities around the world are ...

As the case count in China's new coronavirus outbreak eclipsed those reported in the 2003 SARS outbreak on Wednesday, the United States evacuated 200 Americans from the center of the epidemic.

Overnight, the number of cases of the 2019-nCoV coronavirus in China shot from 4,515 to 5,974, while the death toll climbed to 132. There were 5,327 cases and 348 deaths reported in China during...

As the death toll in China's coronavirus outbreak surpassed 100 on Tuesday, the United States expanded its travel alert and prepared to evacuate American government workers who are in the center of the epidemic.

Overnight, the number of cases of the 2019-nCoV coronavirus in China shot from 2,835 to 4,515, the New York Times reported. Of those cases, 976 are considered severe.

Chinese officials extended the New Lunar Year holiday on Sunday, as the number of cases of a new coronavirus climbed past 2,700 and the death toll reached 81.

Meanwhile, the United States reported on Sunday that its latest case count for the 2019-nCoV virus has climbed to five.

"To date, we have 110 of what we call persons under investigation in 26 states. This is a cumulati...

As China scrambles to contain an outbreak of a new coronavirus spreading rapidly within its own borders and to other countries, U.S. infectious disease experts tackled questions about the emerging virus.

What is the novel coronavirus circulating in China?

Coronaviruses are a large family of viruses responsible for about one out of every four cases of the common cold, ...

Snakes may be the source of the new coronavirus outbreak in humans that started in China and has spread to other countries.

Patients who became infected with the virus -- named 2019-nCoV by the World Health Organization -- were exposed to wildlife at a wholesale market where seafood, poultry, snakes, bats and farm animals were sold, researchers report.

The Chinese scientists...

The first U.S. case of a new coronavirus illness that originated in central China has been identified in a patient in Washington State, federal health officials announced on Tuesday.

In a news briefing, officials said that the male patient was hospitalized with pneumonia last week and had recently traveled to Wuhan, a city of 11 million people in China where the outbreak is thought t...

Travelers from China will now have to undergo enhanced screening at three major U.S. airports for symptoms of a new coronavirus that has caused an outbreak of pneumonia in China, federal health officials said Friday.

The three airports -- San Francisco (SFO), New York (JFK) and Los Angeles (LAX) -- receive the most travelers from central China, officials explained.

The U.S. ...

Mosquitoes that can't be infected by or spread dengue virus have been created by scientists.

The researchers genetically engineered the mosquitoes to be resistant to all four types of dengue, a mosquito-borne virus that's a significant global health threat.

This is the first time that mosquitoes have been genetically engineered to be resistant to all types of dengue, which c...