Table 1
Comparison between SARS-CoV-2, MERS-CoV, and SARS-CoV.
| SARS-CoV-2 | MERS-CoV | SARS-CoV | |
|---|---|---|---|
| Pandemic/ epidemic year | 2019-Present | 2012 | 2002–2003 |
| Coronavirus subfamily | Beta–Coronavirus | Beta–Coronavirus | Beta–Coronavirus |
| Natural reservoir | Bat | Bat | Bat |
| Intermediate host | Pangolin | Dromedary camel | Palm civets |
| Origin | Wuhan, China | Arabian Peninsula | Guangdong, China |
| Country spread | >180 | 27 | 26 |
| Total cases to date | >7,000,000 | 2,494 | 8,096 |
| Total deaths to date | >400,000 | 858 | 774 |
| Total cases in the U.S. to date | >1,900,000 | 2 | 27 |
| Case fatality rate* | 1–7.2% | 34.4% | 9.6% |