Table 1.
Review of epidemiological constants and parameters for SARS-CoV-2.
| Reproductive number | Infection rate (days−1) | Infectious period (days) | Incubation period (days) | Latent period (days) | Serial interval (days) | Ref. |
|---|---|---|---|---|---|---|
| 1.4–2.5 | 7 | WHO (2020) | ||||
| 2.8–3.3 | 5–6 | ECDC (2020) | ||||
| 3.3 | Liu et al. (2020) | |||||
| 1.9–6.5 | 4–6 | 5.3 (4–8) | Park et al. (2020) | |||
| 2.4 (2–2.6) | 5.1 | 6.5 | Ferguson et al. (2020) | |||
| 2.7 (China) | 2.4 | 6 | 6 | 8.4 | Wu et al. (2020) | |
| 2.2 (China) | 5.2 | 7.5 ± 3.4 | Li et al. (2020) | |||
| 3.6–4.6 (China) | 0.8 | 4 | 4 | Choi and Ki (2020) | ||
| 6.5 (China) | 0.2 | 3 | 7 | Tang et al. (2020) | ||
| 2.8 (China) | 0.6–1.7 | 5 | 3 | Lin et al. (2020) | ||
| 1.6–2.6 (China) | 5.2 | Kucharski et al. (2020) | ||||
| 1.5–5.9 (China) | 0.3 | Zhao and Chen (2020) | ||||
| 2–3 (Spain) | Abbott et al. (2020) | |||||
| 2.9 Spain | Caicedo et al. (2020) | |||||
| 2.8–3.3 (Italy) | Remuzzi and Remuzzi (2020) | |||||
| 1-4 Italy | 2.3 | 5.2 | Distante et al. (2020) | |||
| 3 (Italy) | Abbott et al. (2020) | |||||
| 2.1–4.2 (Latin America) | Caicedo et al. (2020) | |||||
| 1 | 10.3 | 7 | Fang et al. (2020) | |||
| 5 (2–14) | Linton et al. (2020) | |||||
| 3–7 | Wang et al. (2020) | |||||
| 5 | Nishiura et al. (2020); You et al. (2020) | |||||
| 5.2 | 5.1 | Zhang et al. (2020) | ||||
| 1.4–6.5 (mean 3) | 0.2–1.7 | 2.3–10.3 (mean 4.6) | 2–14 (mean 5.5) | 3–7 (mean 5) | 4–8 (mean 6) | Range |