Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. Starting in January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. In March 2020, the World Health Organization declared COVID-19 a global health emergency; they declared the end of the emergency in May 2023.
Key Facts
| Subject | COVID-19 |
| Category | Contagious disease caused by SARS-CoV-2 |
| Reading time | 1 min · Intermediate |
| Key date | 2019 |
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Reference material for this entry is drawn from the open encyclopedic record, including Wikipedia , available under the CC BY-SA 4.0 license. Images are credited individually beside each photo.