Comparative Serological Study for the Prevalence of Anti-MERS Coronavirus Antibodies in High- and Low-Risk Groups in Qatar

Table 2

Number of reactive samples for anti-MERS S1 IgG using rS1-ELISA.

Sample source	Year of collection (no. screened)	No. borderline/no. screened (%)	No. reactive/no. screened (%)
BD	2012 (120)	1/120 (0.83)	0/120 (0)
	2013 (28)	0/28 (0)	0/28 (0)
	2014 (611)	0/611 (0)	1/611 (0.16)
	2015 (3383)	1/3383 (0.03)	5/3383 (0.15)
	2016 (577)	1/577 (0.17)	1/577 (0.17)
Subtotal	4719	3/4719 (0.08)	7/4719 (0.13)
CC	May-2015 (100)	0/100 (0)	1/100 (1)
	Feb-2016 (10)	0/10 (0)	0/10 (0)
	June-2016 (25)	0/25 (0)	0/25 (0)
Subtotal	135	0/135 (0)	1/135 (0.74)
CP	Mar-2015 (1)	0/1 (0)	1/1 (100)
	May-2015 (1)	0/1 (0)	1/1 (100)
	Feb-2016 (1)	0/1 (0)	1/1 (100)
	May-2016 (1)	0/1 (0)	0/1 (0)
Subtotal	4	0/4 (0)	3/4 (75)
Total	Total (4858)	3/4858 (0.06)	12/4858 (0.25)

Positive samples are shown in italic.