Table 2.

Significant (P<.05) timepoints for anomaly detection in health care workers, Switzerland.

Date	Federal Office of Public Health proportion of positives	Expected	Difference from expected	Anomaly type
05/04/2020	.324675325	1	–.675324675	Negative
08/04/2020	1.83982684	1	.83982684	Positive
20/04/2020	1.677489177	1	.677489177	Positive
30/04/2020	.91991342	0	.91991342	Negative
12/05/2020	.162337662	0	.162337662	Negative
09/07/2020	.703463203	1	–.296536797	Negative
15/07/2020	.91991342	0	.91991342	Positive
02/08/2020	.216450216	0	.216450216	Negative