What is coronavirus? Deadly outbreak in China sparks global concern
DETROIT – A deadly outbreak of a new coronavirus has claimed six lives in China and sickened hundreds more.
The outbreak has reached four other countries and territories and threatens to spread further during the Lunar New Year travel rush.
Anxiety grew both at home and abroad after Chinese government expert Zhong Nanshan confirmed fears on state television late Monday that the virus can spread from human to human.
Six people have died and 291 have been infected in China, the National Health Commission said Tuesday.
Concerned about a global outbreak similar to SARS, another coronavirus that spread from China to more than a dozen countries in 2002-2003, numerous nations have adopted screening measures for travelers from China, especially those arriving from Wuhan, the central city where the virus appears to have originated.
The coronavirus family includes those that cause the common cold, but some found in bats, camels and other animals have evolved into more severe illnesses like SARS, or severe acute respiratory syndrome, and MERS, Middle East respiratory syndrome.
The possibility the virus can be transmitted between people increases the chances it could spread faster and more widely. The Chinese government has estimated people will make around 3 billion trips during the Lunar New Year travel season, but some social media users have said they may stay home due to concern about the virus.
What is coronavirus?
Common human coronaviruses
Common human coronaviruses, including types 229E, NL63, OC43, and HKU1, usually cause mild to moderate upper-respiratory tract illnesses, like the common cold. Most people get infected with these viruses at some point in their lives. These illnesses usually only last for a short amount of time. Symptoms may include
- runny nose
- sore throat
- a general feeling of being unwell
Human coronaviruses can sometimes cause lower-respiratory tract illnesses, such as pneumonia or bronchitis. This is more common in people with cardiopulmonary disease, people with weakened immune systems, infants, and older adults.
Other human coronaviruses
Two other human coronaviruses, MERS-CoV and SARS-CoV have been known to frequently cause severe symptoms. MERS symptoms usually include fever, cough, and shortness of breath which often progress to pneumonia. About 3 or 4 out of every 10 patients reported with MERS have died. MERS cases continue to occur, primarily in the Arabian Peninsula. SARS symptoms often included fever, chills, and body aches which usually progressed to pneumonia. No human cases of SARS have been reported anywhere in the world since 2004.
Human coronaviruses most commonly spread from an infected person to others through
- the air by coughing and sneezing
- close personal contact, such as touching or shaking hands
- touching an object or surface with the virus on it, then touching your mouth, nose, or eyes before washing your hands
- rarely, fecal contamination
In the United States, people usually get infected with common human coronaviruses in the fall and winter. However, you can get infected at any time of the year. Most people will get infected with one or more of the common human coronaviruses in their lifetime. Young children are most likely to get infected. However, people can have multiple infections in their lifetime.
How to protect yourself
There are currently no vaccines available to protect you against human coronavirus infection. You may be able to reduce your risk of infection by doing the following
- wash your hands often with soap and water for at least 20 seconds
- avoid touching your eyes, nose, or mouth with unwashed hands
- avoid close contact with people who are sick
For information about hand washing, see CDC’s Clean Hands Save Lives!
How to protect others
If you have cold-like symptoms, you can help protect others by doing the following
- stay home while you are sick
- avoid close contact with others
- cover your mouth and nose with a tissue when you cough or sneeze, then throw the tissue in the trash and wash your hands
- clean and disinfect objects and surfaces
There are no specific treatments for illnesses caused by human coronaviruses. Most people with common human coronavirus illness will recover on their own. However, you can do some things to relieve your symptoms
- take pain and fever medications (Caution: do not give Aspirin to children)
- use a room humidifier or take a hot shower to help ease a sore throat and cough
If you are mildly sick, you should
- drink plenty of liquids
- stay home and rest
If you are concerned about your symptoms, you should see your healthcare provider.
In addition to 258 cases in Wuhan, more than 20 have been diagnosed in Beijing, Shanghai, Guangdong province in the south and Zhejiang in the east. Four cases have been confirmed overseas among Chinese travelers in South Korea, Japan and Thailand. A Taiwanese woman who just returned from Wuhan tested positive for the virus, Taiwan's Centers for Disease Control reported Tuesday.
Fifteen medical workers have also tested positive for the virus, the Wuhan Municipal Health Commission said.
Two cases in Guangdong were people who had not visited Wuhan but fell ill after family members returned from there. Zhong cited those as evidence the disease had spread between humans.
Australia, Japan, South Korea and the U.S. were among the countries increasing airport screenings. Three weekly direct flights from Wuhan to Sydney will be met by border security and biosecurity staff for assessments, chief Australian medical officer Brendan Murphy told reporters.
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