Coronaviruses are a group of viruses that cause diseases in mammals and birds. In humans, the virus causes respiratory infections which are typically mild but, in rare cases, can be lethal. In cows and pigs they may cause diarrhea, while in chickens it can cause an upper respiratory disease. There are no vaccines or antiviral drugs that are approved for prevention or treatment.


Its is a Lung Disease and often affects Respiratory system in the body.
A common virus that causes an infection in your nose, sinuses, or upper throat. Most coronaviruses are not dangerous.

Some types of them are serious, though. About 858 people have died from Middle East respiratory syndrome (MERS), which first appeared in 2012 in Saudi Arabia and then in other countries in the Middle East, Africa, Asia, and Europe. In April 2014, the first American was hospitalized for MERS in Indiana and another case was reported in Florida. Both had just returned from Saudi Arabia. In May 2015, there was an outbreak of MERS in Korea, which was the largest outbreak outside of the Arabian Peninsula. In 2003, 774 people died from a severe acute respiratory syndrome (SARS) outbreak. As of 2015, there were no further reports of cases of SARS. MERS and SARS are types of coronaviruses.
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Lung Disease & Respiratory Health Reference
Coronavirus
A coronavirus is a kind of common virus that causes an infection in your nose, sinuses, or upper throat. Most coronaviruses are not dangerous.

Some types of them are serious, though. About 858 people have died from Middle East respiratory syndrome (MERS), which first appeared in 2012 in Saudi Arabia and then in other countries in the Middle East, Africa, Asia, and Europe. In April 2014, the first American was hospitalized for MERS in Indiana and another case was reported in Florida. Both had just returned from Saudi Arabia. In May 2015, there was an outbreak of MERS in Korea, which was the largest outbreak outside of the Arabian Peninsula. In 2003, 774 people died from a severe acute respiratory syndrome (SARS) outbreak. As of 2015, there were no further reports of cases of SARS. MERS and SARS are types of coronaviruses.


But in early January 2020, the World Health Organization identified a new type: 2019 novel coronavirus (2019-nCoV) in China. By late January, there were 300 confirmed cases in China and a death count that was still in the single digits, but rising. And despite airport screenings, a traveler had brought the first case to the U.S.

Often a coronavirus causes upper respiratory infection symptoms like a stuffy nose, cough, and sore throat. You can treat them with rest and over-the-counter medication. The coronavirus can also cause middle ear infections in children.

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Middle East Respiratory Syndrome
MERS is Middle East respiratory syndrome, which is brought on by a virus that has wreaked havoc in the Eastern Hemisphere.
What Is a Coronavirus?
Coronaviruses were first identified in the 1960s, but we don't know where they come from. They get their name from their crown-like shape. Sometimes, but not often, a coronavirus can infect both animals and humans.

Most coronaviruses spread the same way other cold-causing viruses do: through infected people coughing and sneezing, by touching an infected person's hands or face, or by touching things such as doorknobs that infected people have touched.

Almost everyone gets a coronavirus infection at least once in their life, most likely as a young child. In the United States, coronaviruses are more common in the fall and winter, but anyone can come down with a coronavirus infection at any time.


Common Symptoms of Coronavirus:

The symptoms of most coronaviruses are similar to any other upper respiratory infection, including runny nose, coughing, sore throat, and sometimes a fever. In most cases, you won't know whether you have a coronavirus or a different cold-causing virus, such as rhinovirus.

You could get lab tests, including nose and throat cultures and blood work, to find out whether your cold was caused by a coronavirus, but there's no reason to. The test results wouldn't change how you treat your symptoms, which typically go away in a few days.

But if a coronavirus infection spreads to the lower respiratory tract (your windpipe and your lungs), it can cause pneumonia, especially in older people, people with heart disease, or people with weakened immune systems.

What to Do About Coronavirus:

There is no vaccine for coronavirus. To help prevent a coronavirus infection, do the same things you do to avoid the common cold:

Wash your hands thoroughly with soap and warm water or with an alcohol-based hand sanitizer.
Keep your hands and fingers away from your eyes, nose, and mouth.
Avoid close contact with people who are infected.
You treat a coronavirus infection the same way you treat a cold:

Get plenty of rest.
Drink fluids.
Take over-the-counter medicine for a sore throat and fever. But don't give aspirin to children or teens younger than 19; use ibuprofen or acetaminophen instead.
A humidifier or steamy shower can also help ease a sore and scratchy throat.

Even when a coronavirus causes MERS or SARS in other countries, the kind of coronavirus infection common in the U.S. isn't a serious threat for an otherwise healthy adult. If you get sick, treat your symptoms and contact a doctor if they get worse or don't go away.
In China, at least 106 people have died and more than 4,500 cases have been recorded across the country.

Countries currently affected by coronavirus:

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Coronavirus: Which countries have confirmed new cases?
People across the world have been diagnosed with the virus, which originated in the Chinese city of Wuhan.

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New cases of infection with a novel strain of coronavirus, which emerged at a seafood market in the Chinese city of Wuhan, are being reported daily around the world.


In China, at least 106 people have died and more than 4,500 cases have been recorded across the country.

More:
Timeline: How China's new coronavirus spread
What we know so far about coronavirus
Coronavirus: All you need to know about symptoms and risks
Cases have also been confirmed in several countries in the Asia-Pacific region as well as Europe and North America.


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Here are the countries that have so far confirmed cases of the new coronavirus:


Australia:
Australia has confirmed five cases of the virus. The most recent was a 21-year-old woman who was on the last flight out of Wuhan to Sydney before China imposed a travel ban.

The other infections were detected in one man who arrived in Melbourne from China and three men in Sydney who had recently arrived from China and tested positive for the disease. They were being treated in isolation units in local hospitals.

Cambodia:
Cambodia confirmed the first case of coronavirus in the country on January 27.

Health Minister Mam Bunheng said the patient was a 60-year-old Chinese national in the coastal city of Sihanoukville.

Canada:
A man who arrived in Toronto with his wife on January 22 after visiting Wuhan has been confirmed to have the coronavirus. The couple were wearing masks on their flight from Guangzhou and took their own transport home from the airport. His wife has also tested positive for the virus.

Nineteen suspected cases being investigated by health officials are from Toronto.

China:
As of January 28, at least 4,500 people have been confirmed infected across China, most of them in and around Wuhan.

At least 106 people have died, nearly all in Hubei province, but officials have confirmed four deaths elsewhere, including one in Beijing and one in Shanghai.

The Chinese government has imposed drastic curbs on travel to try and rein in the virus; it has also closed tourist sites at what is usually one of the busiest times of the year.

The city of Macau, a gambling hub hugely popular with mainland tourists, has confirmed six cases.

In Hong Kong, eight people are known to have been infected, with hundreds of suspected cases reported.

Hong Kong Chief Executive Carrie Lam has declared the outbreak an "emergency" - the city's highest warning level - and cancelled all official celebrations of the Lunar New Year.
warning level - and cancelled all official celebrations of the Lunar New Year.

France:
There are three known cases of the coronavirus in France, the first European country to be affected.

A 48-year-old man is in hospital in Bordeaux. He had recently travelled to Wuhan and returned to France via the Netherlands.

Germany:
Germany confirmed its first case of the coronavirus on January 28 in southern Bavaria.

"A man in the Starnberg region has been infected with the new coronavirus," a spokesperson for the ministry said, adding that the patient was under surveillance in an isolation ward.

The ministry gave no further details on how the patient came to be infected but said he was in a "medically good state".

The ministry said it considers the risk to the general population to be "low".

Japan:
On January 26, Japan's public broadcaster NHK, citing the health ministry, said a fourth case had been confirmed in a resident of Wuhan in his 40s who was visiting Japan for a holiday.

Japan's health authorities confirmed a third case on January 25. The country's health ministry said a woman in her 30s who lives in Wuhan had contracted the virus.

The country's first case was reported by the health ministry last week: a man who had visited Wuhan and was hospitalised on January 10, four days after his return to Japan.

Local media said the second patient was a man in his 40s who was originally from Wuhan and on a trip to Japan.

Malaysia:
Malaysia confirmed four cases on January 25. All were Chinese nationals on holiday from Wuhan who had arrived in the country from Singapore two days earlier.

The most recently confirmed was a 40-year-old man who was being treated in hospital.

A 65-year-old woman and two boys, aged two and 11, were in a stable condition and being kept in an isolation ward at a public hospital, Malaysia's health minister said.

Other countries includes
Singapore
Thailand
USA
Sri lanka
Taiwan.

Currently chinese most cities are on lock down because of this virus attack..