Volume 29, Number 4—April 2023
Dispatch
Serial Intervals and Incubation Periods of SARS-CoV-2 Omicron and Delta Variants, Singapore
Figure

Figure. Comparative analysis of serial interval of SARS-CoV-2 Delta and Omicron variants, Singapore. A) Incubation period using only transmission pairs with clear epidemiological links and single-day source exposure to primary case. B) Serial interval of all symptomatic transmission pairs. C) Serial interval of all symptomatic transmission pairs with transmissions within households. D) Serial interval of all symptomatic transmission pairs with transmissions outside of households (workplace, social events). Means and 95% CIs are based on fitting a Gamma distribution using the maximum-likelihood method. p values were calculated using Wilcoxon rank-sum test.
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