. 2022 Sep 15;19(18):11613. doi: 10.3390/ijerph191811613

Table 2.

Basic reproduction number ( $R_{0}$ ) of various infectious diseases with proportion of studies reporting $R_{0}$ within the given threshold.

Reproduction Number Threshold	Number (%)	Cumulative Number (%)	Mean $R_{0}$	Range
Epidemic containment ( $R_{0}$ < 1)	21 (6.2%)	21 (6.2%)	0.69	0.03–0.99
Influenza (1 ≤ $R_{0}$ < 1.5) [26]	19 (5.6%)	40 (11.8%)	1.33	1.00–1.49
SARS-CoV (1.5 ≤ $R_{0}$ < 4) [23]	231 (68.3%)	271 (80.2%)	2.61	1.50–3.99
HIV (4 ≤ $R_{0}$ < 5) [27]	26 (7.7%)	297 (87.9%)	4.43	4.02–4.95
Smallpox (5 ≤ $R_{0}$ < 6) [28]	16 (4.7%)	313 (92.6%)	5.47	5.00–5.88
Rubella/Polio (6 ≤ $R_{0}$ < 7) [29]	16 (4.7%)	329 (97.3%)	6.49	6–6.96
Chickenpox (7 ≤ $R_{0}$ < 12) [30]	6 (1.8%)	335 (99.1%)	8.84	7.50–11.40
Measles (12 ≤ $R_{0}$ < 18) [31]	3 (0.9%)	338 (100%)	13.96	12.58–14.80