Table 2.

Past medical history in patients admitted with acute COVID-19.

	Delta			Omicron
Type of diagnosis	No prior history	Limited history	Complex history	No prior history	Limited history	Complex history
Incidental [no. (%)]	9 (56.3%)	6 (38%)	1 (6.3%)	22 (40.0%)	22 (40%)	11 (20.0%)
Non-respiratory COVID-19 [no. (%)]	9 (30.0%)	13 (45%)	7 (23.3%)	30 (58.8%)	9 (18%)	10 (19.6%)
Respiratory COVID-19 [no. (%)]	15 (38.5%)	14 (36%)	10 (25.6%)	21 (30.4%)	21 (31%)	25 (36.2%)
Total COVID-19 [no. (%)]	35 (29.2%)	27 (40%)	17 (24.6%)	51 (42.5%)	30 (26%)	35 (29.2%)