Table 2.

Incubation period, latent period, and serial interval for Wuhan-Hu-1 and the delta variant

	Prior SARS-CoV-2 Viruses	Delta
Mean incubation period	5.2 d (95% CI, 4.1–7.0)75	4.4 d (95% CI, 3.9–5.0)77
Mean latent period	5.5 d (95% CI, 5.1–5.9)79	4.0 d (95% CI, 3.5–4.4)80
Serial interval	5.4 d (95% CI, 5.2–5.6)81	Not yet well defined