Seroprevalence of IgM/IgG and Neutralizing Antibodies against SARS-CoV-2 in Unvaccinated Young Adults from Mexico Who Reported Not Having Had a Previous COVID-19 Infection

Table 1

Clinical and demographic characteristics of the study groups.

Parameter	Total unvaccinated young adults n = 171	Prior COVID-19 by self-report		value
		Yes; 21.05% (n = 36)	No; 78.94% (n = 135)
Demographic
Age (years)^a	25 (18–35)	25 (18–35)	24 (18–35)	0.704
Gender^b
Female	69 (118/171)	75 (27/36)	67.4 (91/135)	0.381
Male	31 (53/171)	25 (9/36)	32.6 (44/135)
Clinical symptoms^b
Asymptomatic	—	13.8 (7/36)	—	—
Mild	—	80.5 (29/36)	—
Moderate	—	2.8 (1/36)	—
Serious	—	2.8 (1/36)	—

^aMedian; ^bpercentage data. values were calculated by the Mann–Whitney U and chi-square test (median (IQR)).