Fig. 1: Monthly/weekly household secondary attack rates with key events for the period from January 2020 to February 2022. | npj Digital Medicine

Fig. 1: Monthly/weekly household secondary attack rates with key events for the period from January 2020 to February 2022.

From: Estimating the household secondary attack rate and serial interval of COVID-19 using social media

Fig. 1

Monthly and weekly cohort sizes and household SAR (hSARbr) marked with key events for the period from January 2020 to February 2022, inclusive, for users with ph > 0 and an assumed maximum serial interval of 14 days. The UK Health Security Agency (UKHSA) (formerly Public Health England) SAR scores are the weighted average of SAR scores for different variants published by UKHSA.

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