Coronavirus: What you need to know about COVID-19
Last updated April 24, 2020
What is a coronavirus? What is COVID-19?
Coronaviruses are a family of viruses commonly infecting people and animals. They are responsible for up to one-third of respiratory infections in children and adults, ranging from a common cold to more severe illness, like pneumonia. Historically, these viruses have been responsible for several respiratory disease outbreaks around the world, including SARS, MERS and now COVID-19. The official name of the novel coronavirus is severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). As of 11 March 2020, the WHO has declared COVID-19 a pandemic, which does not refer to the severity of the disease but rather the geographic spread of it where the likelihood of community spread is high.
How is it transmitted?
COVID-19 is spread through airborne transmission, particularly when the infected person coughs or sneezes. These droplets contaminate other people, objects and surfaces within the vicinity of the infected person. When other people touch these objects or surfaces, they transfer the virus to themselves when they touch their face, particularly the eyes, nose or mouth.
Social distancing of a meter away from an infected person is key to preventing infection. The virus has been found to survive on surfaces for several hours, even up to several days. Therefore, practicing frequent handwashing upon coming into contact with these surfaces, i.e., door handles, railings, elevator buttons, etc. may help to prevent yourself from getting the virus.
Your cellphone, money and keyboards can inadvertently carry the virus if you’ve come into contact with the virus from one of these carrier surfaces. Disinfect them often.
Can COVID-19 be caught from someone who does not show symptoms?
Catching COVID-19 from someone with no symptoms is not very likely. However, many people with COVID-19 experience only mild symptoms. This is especially true at the early stages of the disease. It is, therefore, possible to catch COVID-19 from someone who has, for example, just a mild cough and does not feel ill. Some reports suggest transmission of the disease may occur before symptoms are evident. However, this is not believed to be the main way the virus spreads.
What are the symptoms?
Symptoms can appear within 2 to 14 days after exposure to the virus. Most people experience them after 5-6 days.
- Fever (80-90% of cases) - body temperature over 38.3°C. This is the key symptom, sometimes accompanied by chills. More common in adults than children.
- Cough (59-82% of cases) - usually dry.
- Breathing difficulty, or shortness of breath (31-55% of cases) - appears on average 5-8 days after the first symptoms of the disease.
In addition, other symptoms may occur, such as muscle pain, fatigue, increased phlegm production, headache, sore throat (at the beginning of the disease), chest pain, or coughing up blood (5% of cases). Some patients (10% of cases) also present gastrointestinal symptoms such as nausea, vomiting, diarrhea.
Important: Viruses are particularly common at this time of year. COVID-19 is challenging to diagnose as many of the symptoms are common to other infections. The hallmark symptoms of the COVID-19 infection are cough and fever. However, these are also symptoms of the common flu. Other symptoms, like sneezing, runny nose, sore throat, fatigue and muscle aches, are more suggestive of other infectious diseases.
How can I prevent infection?
- Wash your hands frequently with hot water and soap or alcohol-based sanitizer (60% alcohol). If your hands are visibly dirty, use soap and water.
- If you have to cough or sneeze, cover your mouth and nose with your elbow, not your hand.
- Maintain at least 2 meters (6 feet) distance between yourself and others.
Use a of cloth face covering in public settings, especially in areas of significant community-based transmission.
Cloth face coverings should:
- fit snugly but comfortably against the side of the face
- be secured with ties or ear loops
- include multiple layers of fabric
- allow for breathing without restriction
- can be washed and dried without damage or change to shape
- It is recommended to not use surgical masks or N-95 respirators as those are critical supplies needed for healthcare workers and other medical first responders
- For more information on cloth face coverings and how to make them, visit the CDC link.
- Cloth face coverings should:
- Don’t touch your face, especially your mouth, eyes, and nose.
- Don’t go to work or school if you have symptoms of a cold or flu.
- Avoid crowded public places and travel.
- Avoid contact with people who feel unwell.
- Don’t stockpile and use surgical masks if you do not have symptoms.
- They do not protect you from getting infected.
- By doing so, you contribute to supply shortages in hospitals, where they are needed the most.
- However, there are situations when using a mask is advised.
- Do not go to your GP if you suspect being infected with the coronavirus. You may transmit the infection to others. Call your healthcare provider or local health authorities instead.
- Do not use a taxi or public transport if you are advised to go to the hospital.
WHO Director General Statement: Everyone has a responsibility in containing this disease, governments, businesses and individuals. To break the chains of transmission and reduce strain on the health care system, our duty is to not be a carrier of the virus. Staying at home, washing your hands regularly and when going out, keeping a distance of at least a metre from others are the surest ways to reduce transmission and keeping yourself and others free from infection.
Social distancing, quarantine and self-isolation
Social distancing by healthy people has been implemented around the world. These measurescan help to “flatten the curve” of people who may become infected at any one time. The goal isto have less people requiring healthcare at the same time in order to avoid overcrowding inhospitals and running out of medical supplies and equipment.
However, other measures are also being enforced by governments around the world includingquarantine and self-isolation. With all of these terms floating around, many people are confused.Below are definitions for each of these.
Social distancing – measures taken to increase the physical space between people in order toslow the spread of the virus. They include staying home, avoiding crowds, working from homewhen possible, meeting friends and relatives online instead of in person, keeping a distance of 1meter from another person when in a public space.
Quarantine – staying home and away from other people as much as possible after exposure orpotential exposure to an infection. For example, people who have recently traveled or havecome into close contact with a person diagnosed with COVID-19 are being required to undergoa 14-day quarantine.
Self-isolation – refers to someone who is confirmed to be ill with a communicable disease andmust separate themselves from others. In terms of COVID-19, this is directed at people whosecondition is stable and who are not experiencing difficulty breathing.
What are the risks?
Persons with compromised immune systems, i.e., sick people, the elderly, those with pre-existing respiratory conditions, like COPD or asthma, are at greatest risk of COVID-19 complications. The infection may spread to the lungs, causing pneumonia and respiratory failure. It is important to reduce their contact with anyone presenting or potentially presenting contact with the virus. If you have travelled or may have otherwise come into contact with the virus, it is advised to refrain from physically visiting with persons of this vulnerable population. If you are a person with a compromised immune system or are an elderly person, please avoid public spaces or travel.
I am worried I might have COVID-19. What do I do?
If you are concerned about your health, try our fast, free and anonymous WHO-based tool to assess your risk of having COVID-19. Our AI app will ask you a few questions about symptoms, travel and contact with others and guide you through the next steps totake. Check out our COVID-19 checkup.
Is there a cure or vaccine?
Although there is ongoing research, currently there is no known cure, nor a vaccine. Antibiotics are not effective against the virus. Symptomatic treatment is focused on alleviating your symptoms and helping your body fight the virus. If you feel ill, drink plenty of water, rest, and if needed, take painkillers. It is recommended that you separate yourself from other people and animals.
Possible vaccines and some specific drug treatments are currently being tested. The WHO is coordinating global efforts to develop vaccines and medicines to prevent and treat COVID-19.
How long will the outbreak last?
This novel virus features many unknowns. It is not known whether it will withstand the northern hemisphere summer heat, as observed in seasonal influenza.
Fear, loneliness, anxiety during a pandemic
Stress and anxiety are normal reactions in a crisis situation. Managing your emotions during this time is critical in staying well and keeping others safe.
Whether alone, isolated or recovering at home if you have contracted COVID-19, there are many things you can do for yourself to ease the challenge of getting through this crisis.
First, know that you are not alone. Everyone is facing this. We will get through this. Trust the governments and institutions in place to make the best decisions and map their resources to stemming the outbreak.
As for what you can do, it is not necessary to be constantly watching the news. Use this time to your advantage. Read, sew, knit. Do light indoor exercise. Meditate. Learn a new language. Stroll through museum exhibitions online. Taking your mind off of the crisis and putting the focus on you will keep you calm and bide the time.
Reaching out to crisis hotlines can also help to reassure you.
Pregnancy and COVID-19
In two reports including a total of 18 pregnant women with suspected or confirmed COVID-19 pneumonia, there was no laboratory evidence of transmission of the virus to the neonate. Intrauterine or perinatal transmission has not been identified.
Currently, the approach to prevention, evaluation, diagnosis, and treatment of pregnant women with suspected COVID-19 is similar to that in non-pregnant individuals.
Women with COVID-19 can breastfeed. They should practice respiratory hygiene andwear a mask, wash hands before and after touching the baby and routinely clean anddisinfect surfaces. Respiratory hygiene means covering your mouth and nose with yourbent elbow or tissue when you cough or sneeze. Then, dispose of the used tissueimmediately.
Hackers and cyber scammers have been exploiting the COVID-19 pandemic by sendingfraudulent texts or emails in an attempt to trick you into clicking on malicious links or opening attachments. Be vigilant as these methods are likely being used to steal your money or your sensitive information.
- World Health Organization. "Coronavirus disease (COVID-19) outbreak", March 10, 2020
- CDC. "Coronavirus Disease 2019 (COVID-19)", March 9, 2020
- ECDC. "Q & A on COVID-19", March 6, 2020
- Up to date. "Coronavirus disease 2019 (COVID-19)", March 9, 2020
- Up to date. "Coronaviruses", February 18, 2020
- NHS. "Coronavirus (COVID-19)", March 5, 2020