From the 51,829 individuals screened, 19,763 individuals screened as positive and 32,063 individuals screened as negative. Of the positive individuals, 505 (2.56%) had a titer of 1:80, 943 (4.77%) of 1:160, 4391 (22.23%) of 1:320, 6272 (31.75%) of 1:960 and 7641 (38.68%) of 1:2880. Titers of 1:80 and 1:160 were categorized as low titers, 1:320 as moderate, and 1:960 and ≥1:2880 as high titers. From these results, the researchers deduced that majority of positive individuals have moderate to high titers of anti-spike antibodies.