Table 2. Correlation Between Number of New COVID-19 Cases per Week and the Proportion of Inferred Household Transmissions With a Pediatric Index Case.

Period	No. of wks	Spearman ρ	P value
First outbreak	11	−0.627	.04
Second period	17	−0.145	.58
Winter wave	25	−0.667	<.001
Fourth period	19	−0.877	<.001
Delta wave	22	−0.474	.03
Omicron BA.1/BA.2 wave	27	−0.875	<.001
Omicron BA.3/BA.4 wave	18	−0.944	<.001
Whole study period	145	−0.340	<.001