The virus is mainly spread during close contact and via respiratory droplets produced when people cough or sneeze. Respiratory droplets may be produced during breathing but the virus is not generally airborne. People may also contract COVID-19 by touching a contaminated surface and then their face. It is most contagious when people are symptomatic, although spread may be possible before symptoms appear. The virus can survive on surfaces up to 72 hours. Time from exposure to onset of symptoms is generally between two and fourteen days, with an average of five days. The standard method of diagnosis is by reverse transcription polymerase chain reaction (rRT-PCR) from a nasopharyngeal swab. The infection can also be diagnosed from a combination of symptoms, risk factors and a chest CT scan showing features of pneumonia.
Recommended measures to prevent infection include frequent hand washing, social distancing (maintaining physical distance from others, especially from those with symptoms), covering coughs and sneezes with a tissue or inner elbow, and keeping unwashed hands away from the face. The use of masks is recommended for those who suspect they have the virus and their caregivers. Recommendations for mask use by the general public are variable with some authorities recommending against their use, some recommending their use, and others requiring their use. There is no vaccine or specific antiviral treatment for COVID-19. Management involves treatment of symptoms, supportive care, isolation, and experimental measures. Read more...
^Countries and territories, and two international conveyance where cases were diagnosed. Nationality and location of original infection may vary. In some countries, the cases cover several territories, as noted accordingly.
^Cumulative confirmed cases reported to date. The actual number of infections and cases are likely to be higher than reported.
^Total deaths may not necessarily add up due to the frequency of values updating for each individual location.
^Recovered cases. All recoveries may not be reported. Total recoveries may not necessarily add up due to the frequency of values updating for each individual location. "–" denotes that no reliable data is currently available for that territory, not that the value is zero.
As of 23 March 2020, over 40% of all GPs in Norway have been registered 20,200 patients with the "corona code" R991. The figure includes both cases where the patient has been diagnosed with coronavirus infection through testing, and where the GP has used the "corona code" after assessing the patient's symptoms against the criteria by the Norwegian Institute of Public Health.
As of 24 March 2020, the Norwegian Institute of Public Health estimates that between 7,120 and 23,140 Norwegians are infected with the coronavirus.
^Sweden Testing of suspected infections has been cut back in the whole country in the period around 12 March 2020, in order to focus efforts on people with increased risk of serious illness and complications.
The Danish Government does not report the number of recoveries.
From 12 March 2020, the criteria for testing has been changed; only people with more serious symptoms and health professionals are being tested.
Including cases from the disputedCrimea, which was annexed by Russia in 2014 but remains internationally recognized as being under Ukrainian sovereignty. Excluding the cases from Diamond Princess cruise ship which are classified as "on an international conveyance". One fatality was not officially recorded by the Russian authorities as caused by coronavirus.
^Diamond Princess The British cruise ship Diamond Princess was in Japanese waters, and Japanese administration was asked to manage its quarantine, with the passengers having not entered Japan. Therefore, this case is neither included in the Japanese government's official count nor in United Kingdom's one. The World Health Organization classifies the cases as being located "on an international conveyance".
^Ukraine Excluding cases from the disputedCrimea, which was annexed by Russia in 2014 but remains internationally recognized as being under Ukrainian sovereignty. Because the Russian authorities are tabulating cases from Crimea, they are included in the Russian total.
^MS Zaandam The cruise ship MS Zaandam was near Panamanian waters, with the intention of transiting the Panama Canal to make its way to Florida. But the Panamanian government has denied it access to the canal for "sanitary reasons" and has not counted it on their national figures.
^Lau, Hien; Khosrawipour, Veria; Kocbach, Piotr; Mikolajczyk, Agata; Ichii, Hirohito; Schubert, Justyna; Bania, Jacek; Khosrawipour, Tanja (March 2020). "Internationally lost COVID-19 cases". Journal of Microbiology, Immunology and Infection. doi:10.1016/j.jmii.2020.03.013. PMID32205091.The total number of cases may not necessarily add up due to the frequency of values updating for each individual location.
The 2019–20 coronavirus pandemic spread to many countries around the world, with the most affected countries being the United States, Italy, Spain, China, France, Iran, and South Korea. National response measures have been varied, and have included containment measures such as lockdowns, quarantines, and curfews. This is a dynamic list of different responses by various nations across the world. Read more...
Scanning electron microscope image of the virus emerging from the surface of cells
This images reveals ultra-structural morphology exhibited by the virus
Electron microscope image shows the virus isolated in a patient emerging from the surface of cells (pink)
Illustration of SARS-CoV-2 virus in the blood stream
The 2019–20 coronavirus pandemic has had far-reaching consequences beyond the spread of the disease and efforts to quarantine it. As the pandemic has spread around the globe, concerns have shifted from supply-side manufacturing issues to decreased business in the services sector.
Supply shortages are expected to affect a number of sectors due to panic buying, increased usage of goods to fight the pandemic, and disruption to factories and logistics in mainland China. There have been widespread reports of supply shortages of pharmaceuticals, with many areas seeing panic buying and consequent shortages of food and other essential grocery items. The technology industry, in particular, has been warning about delays to shipments of electronic goods. Read more...
Medium exposure risk jobs include those that require frequent or close contact with people who are not known or suspected with COVID-19, but may be infected due to ongoing community transmission or international travel. This includes workers who have contact with the general public such as in schools, high-population-density work environments, and some high-volume retail settings. Depending on the sector, there are specific recommended procedures to protect workers and bystanders if a person with COVID-19 is encountered.
As of 31 March 2020, there are 643 articles within the scope of WikiProject COVID-19. Including non-article pages, such as talk pages, redirects, categories, project pages, etcetera, there are 2,838 pages in the project.