Table 1. Incidence rate and risk among individuals living within 25 m of index cases relative to individuals living within 25 m of index controls.

Time Frame	Index Cases			Index Controls			Unadjusted Estimates		Adjusted Estimates ‡
	Population*	Cases †	Incidence Rate/1,000	Population*	Cases †	Incidence Rate/1,000	Relative Risk	95% CI	Relative Risk	95% CI
0–7 d	345,512	548	1.59	269,058	73	0.27	5.85	4.58–7.47	5.39	4.22–6.88
8–14 d	345,512	120	0.35	269,058	37	0.14	2.53	1.75–3.65	2.35	1.62–3.40
15–21 d	345,512	68	0.20	269,058	23	0.09	2.3	1.43–3.69	2.25	1.40–3.62
22–28 d	345,512	31	0.09	269,058	9	0.03	2.68	1.28–5.63	2.47	1.17–5.21
29–35 d	345,512	33	0.10	269,058	14	0.05	1.84	0.98–3.43	1.51	0.80–2.84
36–42 d	345,512	23	0.07	269,058	11	0.04	1.63	0.79–3.34	1.39	0.67–2.86

*Cumulative total population around 672 index cases/index controls (excluding index cases).

^†Cumulative number of cases around 672 index cases/index controls (excluding index cases).

^‡Adjusted for age, sex, vaccination status, and distance to the nearest water body.