Table 1 Estimated time-fixed reproduction number (\(R\)), dispersion parameter (\(k\)), the proportion of cases responsible for 80% of the transmission events (\({P}_{80}\)), and the proportion of cases who did not spread to anyone (\({P}_{0}\)) by the generation of transmission.

From: Time-varying overdispersion of SARS-CoV-2 transmission during the periods when different variants of concern were circulating in Japan

Generation

R

k

P_80

P_0

G1

1.21 (1.10–1.34)

0.43 (0.38–0.50)

0.23 (0.21–0.25)

0.56 (0.52–0.60)

G2 + 

0.28 (0.24–0.32)

0.15 (0.13–0.18)

0.09 (0.08–0.11)

0.85 (0.83–0.87)

All

0.65 (0.60–0.70)

0.23 (0.21–0.25)

0.14 (0.13–0.15)

0.74 (0.71–0.76)