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Portal:COVID-19






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The COVID-19 portal

Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. The first known case was identified in Wuhan, China, in December 2019. Most scientists believe the SARS-CoV-2 virus entered into human populations through natural zoonosis, similar to the SARS-CoV-1 and MERS-CoV outbreaks, and consistent with other pandemics in human history. Social and environmental factors including climate change, natural ecosystem destruction and wildlife trade increased the likelihood of such zoonotic spillover. The disease quickly spread worldwide, resulting in the COVID-19 pandemic.

Transmission and life-cycle of SARS-CoV-2 causing COVID-19.

Several COVID-19 vaccines have been approved and distributed in various countries, many of which have initiated mass vaccination campaigns. Other preventive measures include physical or social distancing, quarantining, ventilation of indoor spaces, use of face masks or coverings in public, covering coughs and sneezes, hand washing, and keeping unwashed hands away from the face. While drugs have been developed to inhibit the virus, the primary treatment is still symptomatic, managing the disease through supportive care, isolation, and experimental measures.

The pandemic caused severe social and economic disruption around the world, including the largest global recession since the Great Depression. Widespread supply shortages, including food shortages, were caused by supply chain disruptions and panic buying. Reduced human activity led to an unprecedented temporary decrease in pollution. Educational institutions and public areas were partially or fully closed in many jurisdictions, and many events were cancelled or postponed during 2020 and 2021. Telework became much more common for white-collar workers as the pandemic evolved. Misinformation circulated through social media and mass media, and political tensions intensified. The pandemic raised issues of racial and geographic discrimination, health equity, and the balance between public health imperatives and individual rights. (Full article)
Read more:
  • Virus
  • Disease
  • About the virus

    SARS-CoV-2 as seen by a cryo-electron tomography scan.

    SARS‑CoV‑2 belongs to the broad family of viruses known as coronaviruses. It is a positive-sense single-stranded RNA (+ssRNA) virus, with a single linear RNA segment. Coronaviruses infect humans, other mammals, including livestock and companion animals, and avian species. Human coronaviruses are capable of causing illnesses ranging from the common cold to more severe diseases such as Middle East respiratory syndrome (MERS, fatality rate ~34%). SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV.

    Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). Coronaviruses undergo frequent recombination. The mechanism of recombination in unsegmented RNA viruses such as SARS-CoV-2 is generally by copy-choice replication, in which gene material switches from one RNA template molecule to another during replication. The SARS-CoV-2 RNA sequence is approximately 30,000 bases in length, relatively long for a coronavirus—which in turn carry the largest genomes among all RNA families. Its genome consists nearly entirely of protein-coding sequences, a trait shared with other coronaviruses. (Full article)

    Disease progress

    As of 2 June 2024, 775,522,390 casesofCOVID-19 have been reported, resulting in 7,049,617 reported deaths.[1]


  • t
  • e
  • Updated June 2, 2024.

    COVID-19 pandemicbylocation[1]
    Location Cases Deaths
    World[a] 775,522,390 7,049,617
    European Union European Union[b] 185,641,885 1,261,443
    United States United States 103,436,829 1,187,771
    China China[c] 99,357,895 122,215
    India India 45,039,140 533,610
    France France 38,997,490 168,091
    Germany Germany 38,437,756 174,979
    Brazil Brazil 37,519,960 702,116
    South Korea South Korea 34,571,873 35,934
    Japan Japan 33,803,572 74,694
    Italy Italy 26,722,730 197,018
    United Kingdom United Kingdom 24,929,992 232,112
    Russia Russia 24,180,909 402,878
    Turkey Turkey 17,004,714 101,419
    Spain Spain 13,980,340 121,852
    Australia Australia 11,861,161 25,236
    Vietnam Vietnam 11,624,000 43,206
    Argentina Argentina 10,132,025 130,860
    Taiwan Taiwan 9,970,937 17,672
    Netherlands Netherlands 8,636,374 22,986
    Mexico Mexico 7,709,747 335,011
    Iran Iran 7,627,863 146,837
    Indonesia Indonesia 6,829,029 162,058
    Poland Poland 6,662,888 120,711
    Colombia Colombia 6,385,568 142,727
    Austria Austria 6,082,348 22,534
    Portugal Portugal 5,644,144 28,160
    Greece Greece 5,634,857 39,013
    Ukraine Ukraine 5,531,685 109,920
    Chile Chile 5,400,274 62,705
    Malaysia Malaysia 5,283,624 37,350
    Belgium Belgium 4,862,069 34,339
    Israel Israel 4,841,558 12,707
    Canada Canada 4,810,303 55,057
    Thailand Thailand 4,779,858 34,641
    Czech Republic Czech Republic 4,759,418 43,503
    Peru Peru 4,524,748 220,831
    Switzerland Switzerland 4,453,957 14,188
    Philippines Philippines 4,140,383 66,864
    South Africa South Africa 4,072,697 102,595
    Romania Romania 3,528,866 68,803
    Denmark Denmark 3,435,018 9,667
    Singapore Singapore 3,006,155 2,024
    Hong Kong Hong Kong 2,876,106 13,466
    Sweden Sweden 2,752,044 27,294
    New Zealand New Zealand 2,593,269 4,008
    Serbia Serbia 2,583,470 18,057
    Iraq Iraq 2,465,545 25,375
    Hungary Hungary 2,230,419 49,051
    Bangladesh Bangladesh 2,050,243 29,495
    Slovakia Slovakia 1,877,753 21,226
    Georgia (country) Georgia 1,862,754 17,150
    Jordan Jordan 1,746,997 14,122
    Republic of Ireland Republic of Ireland 1,736,596 9,613
    Pakistan Pakistan 1,580,631 30,656
    Norway Norway 1,507,772 5,732
    Kazakhstan Kazakhstan 1,504,370 19,072
    Finland Finland 1,499,712 11,466
    Lithuania Lithuania 1,366,434 9,805
    Slovenia Slovenia 1,355,911 10,056
    Bulgaria Bulgaria 1,329,313 38,700
    Croatia Croatia 1,317,083 18,752
    Morocco Morocco 1,279,115 16,305
    Puerto Rico Puerto Rico 1,252,713 5,938
    Guatemala Guatemala 1,250,358 20,216
    Lebanon Lebanon 1,239,904 10,947
    Costa Rica Costa Rica 1,230,653 9,368
    Bolivia Bolivia 1,212,131 22,387
    Tunisia Tunisia 1,153,361 29,423
    Cuba Cuba 1,113,662 8,530
    Ecuador Ecuador 1,076,184 36,049
    United Arab Emirates United Arab Emirates 1,067,030 2,349
    Panama Panama 1,044,357 8,706
    Uruguay Uruguay 1,041,229 7,664
    Mongolia Mongolia 1,011,478 2,136
    Nepal Nepal 1,003,450 12,031
    Belarus Belarus 994,037 7,118
    Latvia Latvia 977,765 7,475
    Saudi Arabia Saudi Arabia 841,469 9,646
    Azerbaijan Azerbaijan 835,410 10,353
    Paraguay Paraguay 735,759 19,880
    State of Palestine Palestine 703,228 5,708
    Bahrain Bahrain 696,614 1,536
    Cyprus Cyprus 691,247 1,445
    Sri Lanka Sri Lanka 672,763 16,901
    Kuwait Kuwait 667,290 2,570
    Dominican Republic Dominican Republic 661,103 4,384
    Myanmar Myanmar 642,339 19,494
    Moldova Moldova 635,666 12,237
    Estonia Estonia 610,427 2,998
    Venezuela Venezuela 552,695 5,856
    Egypt Egypt 516,023 24,830
    Qatar Qatar 514,524 690
    Libya Libya 507,269 6,437
    Ethiopia Ethiopia 501,170 7,574
    Réunion Réunion 494,595 921
    Honduras Honduras 472,791 11,114
    Armenia Armenia 451,831 8,777
    Bosnia and Herzegovina Bosnia and Herzegovina 403,643 16,388
    Oman Oman 399,449 4,628
    Luxembourg Luxembourg 391,429 1,000
    North Macedonia North Macedonia 350,591 9,977
    Zambia Zambia 349,644 4,069
    Brunei Brunei 344,320 178
    Kenya Kenya 344,101 5,689
    Albania Albania 334,863 3,605
    Botswana Botswana 330,650 2,801
    Mauritius Mauritius 327,305 1,070
    Kosovo Kosovo 274,279 3,212
    Algeria Algeria 272,028 6,881
    Nigeria Nigeria 267,188 3,155
    Zimbabwe Zimbabwe 266,362 5,740
    Montenegro Montenegro 251,280 2,654
    Afghanistan Afghanistan 235,214 7,998
    Mozambique Mozambique 233,808 2,252
    Martinique Martinique 230,354 1,104
    Laos Laos 219,043 671
    Iceland Iceland 209,964 186
    Guadeloupe Guadeloupe 203,235 1,021
    El Salvador El Salvador 201,866 4,230
    Trinidad and Tobago Trinidad and Tobago 191,496 4,390
    Maldives Maldives 186,694 316
    Uzbekistan Uzbekistan 175,081 1,016
    Namibia Namibia 172,408 4,108
    Uganda Uganda 172,149 3,632
    Ghana Ghana 172,023 1,462
    Jamaica Jamaica 156,833 3,600
    Cambodia Cambodia 139,127 3,056
    Rwanda Rwanda 133,249 1,468
    Cameroon Cameroon 125,217 1,974
    Malta Malta 121,454 906
    Barbados Barbados 110,680 593
    Angola Angola 107,451 1,937
    Democratic Republic of the Congo Democratic Republic of the Congo 100,615 1,470
    French Guiana French Guiana 98,041 413
    Malawi Malawi 89,168 2,686
    Senegal Senegal 89,078 1,971
    Kyrgyzstan Kyrgyzstan 88,953 1,024
    Ivory Coast Ivory Coast 88,425 835
    Suriname Suriname 82,496 1,405
    New Caledonia New Caledonia 80,163 314
    French Polynesia French Polynesia 79,302 650
    Eswatini Eswatini 75,356 1,427
    Guyana Guyana 74,126 1,301
    Belize Belize 71,409 688
    Fiji Fiji 69,047 885
    Madagascar Madagascar 68,535 1,427
    Jersey Jersey 66,391 161
    Cape Verde Cabo Verde 64,474 417
    Sudan Sudan 63,993 5,046
    Mauritania Mauritania 63,864 997
    Bhutan Bhutan 62,697 21
    Syria Syria 57,423 3,163
    Burundi Burundi 54,569 15
    Guam Guam 52,287 419
    Seychelles Seychelles 51,695 172
    Gabon Gabon 49,051 307
    Andorra Andorra 48,015 159
    Papua New Guinea Papua New Guinea 46,864 670
    Curaçao Curaçao 45,883 305
    Aruba Aruba 44,224 292
    Tanzania Tanzania 43,226 846
    Mayotte Mayotte 42,027 187
    Togo Togo 39,530 290
    The Bahamas Bahamas 38,577 848
    Guinea Guinea 38,572 468
    Isle of Man Isle of Man 38,008 116
    Lesotho Lesotho 36,138 709
    Guernsey Guernsey 35,326 67
    Faroe Islands Faroe Islands 34,658 28
    Haiti Haiti 34,298 860
    Mali Mali 33,164 743
    Cayman Islands Cayman Islands 31,472 37
    Saint Lucia Saint Lucia 30,252 410
    Benin Benin 28,036 163
    Somalia Somalia 27,334 1,361
    Federated States of Micronesia Federated States of Micronesia 26,547 65
    Solomon Islands Solomon Islands 25,954 199
    United States Virgin Islands United States Virgin Islands 25,389 132
    San Marino San Marino 25,292 126
    Republic of the Congo Republic of the Congo 25,219 389
    East Timor Timor-Leste 23,460 138
    Burkina Faso Burkina Faso 22,126 400
    Liechtenstein Liechtenstein 21,576 89
    Gibraltar Gibraltar 20,550 113
    Grenada Grenada 19,693 238
    Bermuda Bermuda 18,860 165
    South Sudan South Sudan 18,823 147
    Tajikistan Tajikistan 17,786 125
    Monaco Monaco 17,181 67
    Equatorial Guinea Equatorial Guinea 17,130 183
    Samoa Samoa 17,057 31
    Tonga Tonga 16,958 12
    Marshall Islands Marshall Islands 16,178 17
    Nicaragua Nicaragua 16,146 245
    Dominica Dominica 16,047 74
    Djibouti Djibouti 15,690 189
    Central African Republic Central African Republic 15,440 113
    Northern Mariana Islands Northern Mariana Islands 14,689 41
    The Gambia Gambia 12,627 372
    Collectivity of Saint Martin Collectivity of Saint Martin 12,324 46
    Vanuatu Vanuatu 12,019 14
    Greenland Greenland 11,971 21
    Yemen Yemen 11,945 2,159
    Caribbean Netherlands Caribbean Netherlands 11,922 41
    Sint Maarten Sint Maarten 11,051 92
    Eritrea Eritrea 10,189 103
    Saint Vincent and the Grenadines Saint Vincent and the Grenadines 9,674 124
    Guinea-Bissau Guinea-Bissau 9,614 177
    Niger Niger 9,515 315
    Comoros Comoros 9,109 160
    Antigua and Barbuda Antigua and Barbuda 9,106 146
    American Samoa American Samoa 8,359 34
    Liberia Liberia 7,930 294
    Sierra Leone Sierra Leone 7,836 125
    Chad Chad 7,702 194
    British Virgin Islands British Virgin Islands 7,459 64
    Cook Islands Cook Islands 7,326 2
    São Tomé and Príncipe Sao Tome and Principe 6,771 80
    Turks and Caicos Islands Turks and Caicos Islands 6,754 40
    Saint Kitts and Nevis Saint Kitts and Nevis 6,607 46
    Palau Palau 6,332 10
    Saint Barthélemy Saint Barthélemy 5,507 5
    Nauru Nauru 5,393 1
    Kiribati Kiribati 5,085 24
    Anguilla Anguilla 3,904 12
    Wallis and Futuna Wallis and Futuna 3,760 9
    Macau Macau 3,514 121
    Saint Pierre and Miquelon Saint Pierre and Miquelon 3,426 2
    Tuvalu Tuvalu 2,943 1
    Saint Helena, Ascension and Tristan da Cunha Saint Helena, Ascension and Tristan da Cunha 2,166
    Falkland Islands Falkland Islands 1,923
    Montserrat Montserrat 1,403 8
    Niue Niue 1,074
    Tokelau Tokelau 80 0
    Vatican City Vatican City 26 0
    Pitcairn Islands Pitcairn Islands 4
    North Korea North Korea 1 6
    Turkmenistan Turkmenistan 0 0
    1. ^ Countries which do not report data for a column are not included in that column's world total.
  • ^ Data on member states of the European Union are individually listed, but are also summed here for convenience. They are not double-counted in world totals.
  • ^ Does not include special administrative regions (Hong Kong and Macau) or Taiwan.
  • (Full article)

    About the symptoms

    Symptoms of coronavirus disease 2019 (COVID-19)

    The symptomsofCOVID-19 are variable depending on the type of variant contracted, ranging from mild symptoms to a potentially fatal illness. Common symptoms include coughing, fever, loss of smell (anosmia) and taste (ageusia), with less common ones including headaches, nasal congestion and runny nose, muscle pain, sore throat, diarrhea, eye irritation, and toes swelling or turning purple, and in moderate to severe cases, breathing difficulties. People with the COVID-19 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; and a cluster of digestive symptoms with abdominal pain, vomiting, and diarrhea. In people without prior ear, nose, or throat disorders, loss of taste combined with loss of smell is associated with COVID-19 and is reported in as many as 88% of symptomatic cases. (Full article)

    About the spread

    COVID-19 is mainly transmitted when people breathe in air contaminated by droplets/aerosols and small airborne particles containing the virus. Infected people exhale those particles as they breathe, talk, cough, sneeze, or sing. Transmission is more likely the closer people are. However, infection can occur over longer distances, particularly indoors.

    Infectious particles range in size from aerosols that remain suspended in the air for long periods of time to larger droplets that remain airborne briefly or fall to the ground. Additionally, COVID-19 research has redefined the traditional understanding of how respiratory viruses are transmitted. The largest droplets of respiratory fluid do not travel far, but can be inhaled or land on mucous membranes on the eyes, nose, or mouth to infect. Aerosols are highest in concentration when people are in close proximity, which leads to easier viral transmission when people are physically close, but airborne transmission can occur at longer distances, mainly in locations that are poorly ventilated; in those conditions small particles can remain suspended in the air for minutes to hours. (Full article)

    Containment measures

    Goals of mitigation include delaying and reducing peak burden on healthcare (flattening the curve) and lessening overall cases and health impact.
    Many countries attempted to slow or stop the spread of COVID-19 by recommending, mandating or prohibiting behaviour changes, while others relied primarily on providing information. Measures ranged from public advisories to stringent lockdowns. Outbreak control strategies are divided into elimination and mitigation. Experts differentiate between" zero-COVID", which is an elimination strategy, and mitigation strategies that attempt to lessen the effects of the virus on society, but which still tolerate some level of transmission within the community. Containment strategies consists of the use of public health measures such as contact tracing, mass testing, border quarantine, lockdowns and mitigation software.These strategies can be pursued sequentially or simultaneously during the acquired immunity phase through natural and vaccine-induced immunity.

    (Full article)

    Videos

  • Video about what SARS-CoV-2 does to the human body
  • Video about the transmission of coronaviruses
  • (More videos)

    Recent news

    8 May 2024 – COVID-19 vaccine
    AstraZeneca withdraws its marketing authorizations in Europe and withdraws its COVID-19 vaccines worldwide due to low demand, after finding that the vaccines can very rarely lead to blood clots. (The Telegraph)
    19 March 2024 –
    Former Brazilian president Jair Bolsonaro is indicted over accusations of lying about his COVID-19 vaccination status. (AP)

    Did you know?

    Data maps

    Total confirmed cases by reporting area
      3,000 + per 100,000 inhabitants
      1,000–3,00 per 100,000 inhabitants
      300–1,000 per 100,000 inhabitants
      100–300 per 100,000 inhabitants
      30–100 per 100,000 inhabitants
      0–30 per 100,000 inhabitants
      None or no data
  • Total confirmed deaths by country   100+ per 100,000 inhabitants   18–100 per 100,000 inhabitants   3.3–18 per 100,000 inhabitants   0.6–3.3 per 100,000 inhabitants   0.1–0.6 per 100,000 inhabitants   <0.1 per 100,000 inhabitants   None or no data
    Total confirmed deaths by country
      100+ per 100,000 inhabitants
      18–100 per 100,000 inhabitants
      3.3–18 per 100,000 inhabitants
      0.6–3.3 per 100,000 inhabitants
      0.1–0.6 per 100,000 inhabitants
      <0.1 per 100,000 inhabitants
      None or no data
  • (More statistics)

    Economic impact

    The COVID-19 pandemic caused far-reaching economic consequences including the COVID-19 recession, the second largest global recession in recent history, decreased business in the services sector during the COVID-19 lockdowns, the 2020 stock market crash (which included the largest single-week stock market decline since the financial crisis of 2007–2008), the impact of COVID-19 on financial markets, the 2021–2023 global supply chain crisis, the 2021–2023 inflation surge, shortages related to the COVID-19 pandemic including the 2020–present global chip shortage, panic buying, and price gouging. The pandemic led to governments providing an unprecedented amount of stimulus, and was also a factor in the 2021–2022 global energy crisis and 2022–2023 food crises.

    Amidst the recovery and containment, the world economic system was characterized as experiencing significant, broad uncertainty. Economic forecasts and consensus among macroeconomics experts show significant disagreement on the overall extent, long-term effects and projected recovery. A large general increase in prices was attributed to the pandemic. In part, the record-high energy prices were driven by a global surge in demand as the world quit the economic recession caused by COVID-19, particularly due to strong energy demand in Asia. (Full article)

    Workplace

    Hazard controls for COVID-19 in workplaces are the application of occupational safety and health methodologies for hazard controls to the prevention of COVID-19. Vaccination is the most effective way to protect against severe illness or death from COVID-19. Multiple layers of controls are recommended, including measures such as remote work and flextime, increased ventilation, personal protective equipment (PPE) and face coverings, social distancing, and enhanced cleaning programs. (Full article)

    Misinformation

    False information, including intentional disinformation and conspiracy theories, about the scale of the COVID-19 pandemic and the origin, prevention, diagnosis, and treatment of the disease has been spread through social media, text messaging, and mass media. False information has been propagated by celebrities, politicians, and other prominent public figures. Many countries have passed laws against "fake news", and thousands of people have been arrested for spreading COVID-19 misinformation. The spread of COVID-19 misinformation by governments has also been significant. (Full article)

    Testing

    COVID-19 testing involves analyzing samples to assess the current or past presence of SARS-CoV-2. The two main types of tests detect either the presence of the virus or antibodies produced in response to infection. Molecular tests for viral presence through its molecular components are used to diagnose individual cases and to allow public health authorities to trace and contain outbreaks. Antibody tests (serology immunoassays) instead show whether someone once had the disease. They are less useful for diagnosing current infections because antibodies may not develop for weeks after infection. It is used to assess disease prevalence, which aids the estimation of the infection fatality rate. (Full article)

    Vaccine research

    ACOVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID‑19).

    The COVID‑19 vaccines are widely credited for their role in reducing the spread of COVID‑19 and reducing the severity and death caused by COVID‑19. According to a June 2022 study, COVID‑19 vaccines prevented an additional 14.4 to 19.8 million deaths in 185 countries and territories from 8 December 2020 to 8 December 2021. Many countries implemented phased distribution plans that prioritized those at highest risk of complications, such as the elderly, and those at high risk of exposure and transmission, such as healthcare workers. (Full article)

    Drug research

    COVID-19 drug development is the research process to develop preventative therapeutic prescription drugs that would alleviate the severity of coronavirus disease 2019 (COVID-19). From early 2020 through 2021, several hundred drug companies, biotechnology firms, university research groups, and health organizations were developing therapeutic candidates for COVID-19 disease in various stages of preclinicalorclinical research (506 total candidates in April 2021), with 419 potential COVID-19 drugs in clinical trials, as of April 2021. (Full article)

    Images

  • This image reveals ultra-structural morphology exhibited by the virus
    This image reveals ultra-structural morphology exhibited by the virus
  • SARS-CoV-2 structure
    SARS-CoV-2 structure
  • (More images)

    Topics

    Get involved!

    Get involved by joining WikiProject COVID-19. We discuss collaborations and all manner of issues on our talk page. As of 2 June 2024, there are 2,456 articles within the project's scope. A full list is available here.

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  • References

    1. ^ a b Ritchie, Hannah; Mathieu, Edouard; Rodés-Guirao, Lucas; Appel, Cameron; Giattino, Charlie; Ortiz-Ospina, Esteban; Hasell, Joe; Macdonald, Bobbie; Beltekian, Diana; Dattani, Saloni; Roser, Max (2020–2022). "Coronavirus Pandemic (COVID-19)". Our World in Data. Retrieved 2024-06-02.

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