Table 2.

Actively monitored contacts and PUIs owing to contact with a patient with COVID-19, Illinois, USA, 2020

		Since first reported date of symptom onset				On or after date of first positive specimen
		Total contacts	Did not become a PUI	Met PUI criteria*	PUIs positive for COVID-19†	Total contacts	Did not become a PUI	Met PUI criteria*	PUIs positive for COVID-19†
Community contacts
	High risk	1	0	1	1/1	1	0	1	1/1
	Medium high	7	5	2	0/2	1	1	0	··
	Medium	28	24	4	0/4	0	0	0	··
	Low	116	111	5	0/5	65	61	4	0/4
	Total	152	140	12	1/12	67	62	5	1/5
Health-care personnel contacts
	High risk	32	28	4	0/4	22	20	2	0/2
	Medium high	39	30	9	0/9	29	24	5	0/5
	Medium	12	6	6	0/6	9	5	4	0/4
	Low	112	99	13	0/13	95	84	11	0/11
	Total	195	163	32	0/32	155	133	22	0/22
Total contacts		347	303	44	1‡	222	195	27	1‡

Data are n or n/N. PUI=person under investigation. COVID-19=coronavirus disease 2019.

^*US Centers for Disease Control and Prevention PUI criteria for contacts of a confirmed case: fever (subjective or objective) or signs or symptoms of lower respiratory illness (eg, cough or shortness of breath).

^†PUIs were tested for COVID-19 using real-time RT-PCR for severe acute respiratory syndrome coronavirus 2. Only results from PUIs tested for COVID-19 in this investigation are presented here.

^‡The index patient, Patient 1, is excluded from this total