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What is a coronavirus?

Coronaviruses are a large family of viruses found in both animals and humans. Some infect people and are known to cause illness ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS).

What is a “novel” coronavirus?

A novel coronavirus (CoV) is a new strain of coronavirus that has not been previously identified in humans. The new, or “novel” coronavirus, now called 2019-nCoV, had not previously detected before the outbreak was reported in Wuhan, China in December 2019.

How dangerous is the coronavirus?

As with other respiratory illnesses, infection with 2019-nCoV can cause mild symptoms including a runny nose, sore throat, cough, and fever. It can be more severe for some persons and can lead to pneumonia or breathing difficulties. More rarely, the disease can be fatal. Older people, and people with pre-existing medical conditions (such as, diabetes and heart disease) appear to be more vulnerable to becoming severely ill with the virus.

Is the new virus the same as SARS?

No, 2019-nCoV is from the same family of viruses as Severe Acute Respiratory Syndrome (SARS-CoV) but it is not the same virus.

Should I wear a mask to protect myself?

Wearing a medical mask can help limit the spread of some respiratory disease. However, using a mask alone is not guaranteed to stop infections and should be combined with other prevention measures including hand and respiratory hygiene and avoiding close contact – at least 1 metre (3 feet) distance between yourself and other people.

WHO advises on rational use of medical masks thus avoiding unnecessary wastage of precious resources and potential mis-use of masks (see Advice on the use of masks). This means using masks only if you have respiratory symptoms (coughing or sneezing), have suspected 2019-nCoV infection with mild symptoms or are caring for someone with suspected 2019-nCoV infection. A suspected 2019-nCoV infection is linked to travel in an area in China where 2019-nCoV has been reported, or close contact with someone who has travelled from China and has respiratory symptoms.

How to put on, use, take off and dispose of a mask

Before putting on a mask, wash hands with alcohol-based hand rub or soap and water

Cover mouth and nose with mask and make sure there are no gaps between your face and the mask

Avoid touching the mask while using it; if you do, clean your hands with alcohol-based hand rub or soap and water

Replace the mask with a new one as soon as it is damp and do not re-use single-use masks

To remove the mask: remove it from behind (do not touch the front of mask); discard immediately in a closed bin; wash hands with alcohol-based hand rub or soap and water

Who can catch this virus?

People living or travelling in an area where the 2019-nCoV virus is circulating may be at risk of infection. At present, 2019-nCoV is circulating in China where the vast majority of people infected have been reported. Those infected from other countries are among people who have recently traveled from China or who have been living or working closely with those travellers, such as family members, co-workers or medical professionals caring for a patient before they knew the patient was infected with 2019-nCoV.

Health workers caring for persons who are sick with 2019-nCoV are at higher risk and must protect themselves with appropriate infection prevention and control procedures. People living outside of areas in China where the virus is circulating are not at risk of infection with 2019-nCoV.

Who is at risk from developing severe illness?

While we still need to learn more about how 2019-nCoV affects people, thus far, older people, and people with pre-existing medical conditions (such as diabetes and heart disease) appear to be more at risk of developing severe disease.

Are antibiotics effective in preventing and treating the 2019-nCoV?

No, antibiotics do not work against viruses, they only work on bacterial infections. The novel coronavirus is a virus and, therefore, antibiotics should not be used as a means of prevention or treatment.

Are there any specific medicines to prevent or treat 2019-nCoV?

To date, there is no specific medicine recommended to prevent or treat the novel coronavirus. However, those infected with 2019-nCoV should receive appropriate care to relieve and treat symptoms, and those with severe illness should receive optimized supportive care. Some specific treatments are under investigation and will be tested through clinical trials. WHO is helping to coordinate efforts to develop medicines to treat nCoV with a range of partners.

If you want to protect yourself from getting infected with the new coronavirus, you should maintain basic hand and respiratory hygiene, and safe food practices and avoiding close contact, when possible, with anyone showing symptoms of respiratory illness such as coughing and sneezing.

The following measures are not specifically recommended as 2019-nCoV remedies as they are not effective to protect yourself and can be even harmful:

Taking vitamin C

Smoking

Drinking tradition herbal teas

Wearing multiple masks to maximize protection

Taking self-medication such as antibiotics

In any case, if you have fever, cough and difficulty breathing seek medical care early to reduce the risk of developing a more severe infection and be sure to share your recent travel history with your health care provider.

How long is the incubation period?

The incubation period is the time between infection and the onset of clinical symptoms of disease. Current estimates of the incubation period range from 2-11 days, and these estimates will be refined as more data become available. Based on information from other coronavirus diseases, such as MERS and SARS, the incubation period of 2019-nCoV could be up to 14 days.

Can humans become infected with the 2019-nCoV from an animal source?

Detailed investigations found that SARS-CoV was transmitted from civet cats to humans in China in 2002 and MERS-CoV from dromedary camels to humans in Saudi Arabia in 2012. Several known coronaviruses are circulating in animals that have not yet infected humans. As surveillance improves around the world, more coronaviruses are likely to be identified

The animal source of the 2019-nCoV has not yet been identified. This does not mean you can catch 2019-nCoV from any animal or from your pet. It’s likely that an animal source from a live animal market in China was responsible for some of the first reported human infections. To protect yourself, when visiting live animal markets, avoid direct unprotected contact with live animals and surfaces in contact with animals.

The consumption of raw or undercooked animal products should be avoided. Raw meat, milk or animal organs should be handled with care, to avoid cross-contamination with uncooked foods, as per good food safety practices.

https://www.who.int/news-room/q-a-detail/q-a-coronaviruses

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