Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered
Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment. Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.
The best way to prevent and slow down transmission is to be well informed about the COVID-19 virus, the disease it causes and how it spreads. Protect yourself and others from infection by washing your hands or using an alcohol based rub frequently and not touching your face.
The COVID-19 virus spreads primarily through droplets of saliva or discharge from the nose when an infected person coughs or sneezes, so it’s important that you also practice respiratory etiquette (for example, by coughing into a flexed elbow)
If COVID-19 is spreading in your community, stay safe by taking some simple precautions, such as physical distancing, wearing a mask, keeping rooms well ventilated, avoiding crowds, cleaning your hands, and coughing into a bent elbow or tissue. Check local advice where you live and work. Do it all!
You also find out more about WHO's recommendations for getting vaccinated on public advice page on COVID-19 vaccines.
Protect yourself and others around you by knowing the facts and taking appropriate precautions. Follow advice provided by your local health authority.
Calling in advance allows your healthcare provider to quickly direct you to the right health facility. This protects you, and prevents the spread of viruses and other infections.
Masks Masks can help prevent the spread of the virus from the person wearing the mask to others. Masks alone do not protect against COVID-19, and should be combined with physical distancing and hand hygiene. Follow the advice provided by your local health authority.
Symptoms of COVID-19 are variable, ranging from mild symptoms to severe illness.Common symptoms include headache,loss of smelland taste,nasal congestion and runny nose, cough, muscle pain, sore throat, fever, diarrhea, and breathing difficulties.People with the same infection may have different symptoms, and their symptoms may change over time. Three common clusters of symptoms have been identified: one respiratory symptom cluster with cough, sputum, shortness of breath, and fever; a musculoskeletal symptom cluster with muscle and joint pain, headache, and fatigue; a cluster of digestive symptoms with abdominal pain, vomiting, and diarrhea.In people without prior ear, nose, and throat disorders, loss of taste combined with loss of smell is associated with COVID-19. Of people who show symptoms, 81% develop only mild to moderate symptoms (up to mild pneumonia), while 14% develop severe symptoms (dyspnea, hypoxia, or more than 50% lung involvement on imaging) and 5% of patients suffer critical symptoms (respiratory failure, shock, or multiorgan dysfunction). At least a third of the people who are infected with the virus do not develop noticeable symptoms at any point in time. These asymptomatic carriers tend not to get tested and can spread the disease.Other infected people will develop symptoms later, called "pre-symptomatic", or have very mild symptoms and can also spread the virus.
As is common with infections, there is a delay between the moment a person first becomes infected and the appearance of the first symptoms. The median delay for COVID-19 is four to five days. Most symptomatic people experience symptoms within two to seven days after exposure, and almost all will experience at least one symptom within 12 days.
Most people recover from the acute phase of the disease. However, some people continue to experience a range of effects for months after recovery—named long COVID—and damage to organs has been observed. Multi-year studies are underway to further investigate the long-term effects of the disease.
For informational purposes only. Consult your local medical authority for advice.
The Oxford–AstraZeneca COVID-19 vaccine, sold under the brand names Vaxzevria and Covishield, is a viral vector vaccine produced by the British University of Oxford, British-Swedish company AstraZeneca, and the Coalition for Epidemic Preparedness Innovations.Two countries, Denmark and Norway, permanently halted the use of the Oxford–AstraZeneca vaccine due to a small number of reports of a rare blood clot disorder.
The Pfizer–BioNTech COVID-19 vaccine, also known as Comirnaty, is an mRNA vaccineproduced by the German company BioNTech and the American company Pfizer.In mainland China, Hong Kong, and Macau, Comirnaty is distributed by Fosun Pharma
The Sputnik V COVID-19 vaccine is a viral vector vaccine produced by the Russian Gamaleya Research Institute of Epidemiology and Microbiology.
The Moderna COVID-19 vaccine is an RNA vaccine produced by the American company Moderna, the U.S. National Institute of Allergy and Infectious Diseases, the U.S. Biomedical Advanced Research and Development Authority, and the Coalition for Epidemic Preparedness Innovations.
Sinopharm BBIBP-CorV COVID-19 vaccine is an inactivated virus vaccine produced by the China National Pharmaceutical Group (Sinopharm) and its Beijing Institute of Biological Products.
The Johnson & Johnson COVID-19 vaccine is a viral vector vaccine produced by Janssen Pharmaceutica (a subsidiary of Johnson & Johnson) and Beth Israel Deaconess Medical Center. It is also known as Janssen COVID-19 Vaccine and as COVID-19 Vaccine Janssen. Two countries, Denmark and Norway, discontinued the use of the Johnson & Johnson p>ccine in favor of other available vaccines due to a possible link between the vaccine and a rare blood clot disorder.
CoronaVac is an inactivated virus vaccine produced by the Chinese company Sinovac Biotech.
Covaxin is an inactivated virus vaccine produced by the Indian company Bharat Biotech and the Indian Council of Medical Research.
Convidecia is a viral vector vaccine produced by the Chinese company CanSino Biologics and the Beijing Institute of Biotechnology of the Academy of Military Medical Sciences.
Sputnik Light is a viral vector vaccine, produced by the Russian Gamaleya Research Institute of Epidemiology and Microbiology. It actually consists of the first dose of the Sputnik V vaccine, which is based on the Ad26 vector.
EpiVacCorona is a peptide vaccine produced by the Russian State Research Center of Virology and Biotechnology VECTOR