Causative agents, hosts, mode of transmission, and reproductive number for the major viral diseases.
| Causative virus | Transmitting hosts | Mode of transmission | Reproductive number |
|---|---|---|---|
| SARS coronavirus (SARS-CoV)9 | Bats, Civets | Respiratory droplets | 4 |
| MERS coronavirus (MERS-CoV)9 | Bats, Camels | Respiratory droplets, cough | 1 |
| Ebola9 | Nonhuman primates | Contact with body fluids | 1.5 to 2.5 |
| Seasonal Influenza (H3N2, H1N1)10 | Pig | Respiratory droplets | 2 |
| SARS-CoV-2 (ref. 11 and 12) | Bats | Respiratory droplets | 1.5 to 3.5 |