Table 1.

Correlation between case investigation characteristics and results of the nasopharyngeal swab.

		Positive Nasopharyngeal Swab	p
Lasting more than 15 min	Yes	7 (1.05%)	0.381
	No	5 (1.47%)
Distance within 2 m	Yes	9 (1.03%)	0.194
	No	3 (2.31%)
Use of gloves	Yes	3 (0.84%)	0.330
	No	9 (1.38%)
Use of masks	Yes	7 (0.92%)	<0.01
	No	5 (2.02%)
Use of eye protection	Yes	1 (1.75%)	0.505
	No	11 (1.16%)
Anosmia	Yes	4 (100%)	<0.01
	No	8 (0.80%)
Asthenia	Yes	6 (15.79%)	<0.01
	No	6 (0.62%)
Myalgia	Yes	7 (26.93%)	<0.01
	No	5 (0.51%)
Headache	Yes	5 (5.43%)	<0.01
	No	7 (0.77%)
Fever	Yes	3 (11.11%)	<0.01
	No	9 (0.92%)
Cough	Yes	6 (4.00%)	<0.01
	No	6 (0.70%)
Sore throat	Yes	5 (27.62%)	0.048
	No	7 (0.85%)
Other Symptoms	Yes	11 (3.22%)	<0.01
	No	1 (0.15%)