Table 1.

Demographic data, clinical manifestation, and contact tracing of sixty-seven positive people.

SARS-CoV-2 Variant	Non-Omicron			Omicron and Sub-Lineages
Total Cases (n)	30			37
Gender	Male	Female	Male (%)	Male	Female	Male (%)
	22	7	75.9	23	14	62.2
Age (years old)
10–19	2	2	50.0	0	3	0.0
20–29	3	0	100.0	4	2	66.7
30–39	2	2	50.0	2	1	66.7
40–49	8	3	72.7	5	4	55.6
50–59	6	0	100.0	11	3	78.6
60–69	0	0	-	0	1	0.0
≥70	0	0	-	1	0	100.0
not available	1
Clinical manifestations
Non-specific symptoms of infection	7	3	70.0	17	12	58.6
COVID-19 symptoms	12	5	70.6	18	13	58.1
Previous COVID-19 diagnosis	6	0	100.0	4	7	36.4
Previous SARS-CoV-2 positive swab	5	1	83.3	4	7	36.4
Chronic diseases	3	0	100.0	7	8	46.7
Contact tracing
Contact with COVID-19 sick people in the previous 14 days	9	4	69.2	13	12	52.0
Contact with positive people to the SARS-CoV-2 swab in the previous 14 days	11	4	73.3	14	13	51.9
not available	1