Table 1. Demographic data and co-morbidity status of 127 followed up vaccinees.

Characteristics	No. (%) of vaccinees
Gender
Males	76 (59.8)
Females	51 (40.2)
Age (years)
18–39	82 (64.6)
40–59	45 (35.6)
Co-morbidity	34 (26.8)
Obesity	18 (14.2)
Baseline seroprotection	11 (8.7)
PCR-confirmed Pandemic H1N1 2009 illness	5 (3.9)

PCR, polymerase chain reaction.