Table 2.

Demographic Characteristics of the Participants of the surveillance strategy implemented by the Ministry of Health of the Province of Buenos Aires that were boosted with BNT162b2 at Enrolment

Variable
No. of participants		18
Sex	Male (N (%))	5 (27.8)
	Female (N (%))	13 (72.2)
Age (Median (IQRa))		36.5 (32–45)
COVID-19 Primary Vaccine Platform	BBIBP-CorV (N (%))	2 (11.1)
	Sputnik V (rAd26/rAd5) (N (%))	16 (88.9)
	Time since last dose of primary immunization schedule (in months, (Median (IQR))	4.2 (3.8–4.6)
Prior COVID-19b	No (N (%))	18 (100.0)
	Yes (N (%))	0 (0.0)
Seropositive for N (SARS-CoV-2 nucleoprotein)-specific IgG	No (N (%))	9 (50.0)
	Yes (N (%))	9 (50.0)

^aIQR Interquartile range.

^bConfirmed diagnostic of COVID-19 (PCR, Antigen test or by epidemiological diagnostic).