Lab. No. (1) tipo % vag. swabs %vag./rect. swabsor vag+rect swabs Total investig. %pos (2)Medium Enricm. broth (3) Incubation atmosphere (4)ID
1 c 95% 5% 1147 11.43% a yes a a
4 a 75% 25% 1717 10.07% a + c yes b a + b
8 b 0% 100% 23 14.60% a no b a + b
9 c 0% 100% 2668 14.20% a + c no a a
12 b 0% 100% 1009 12.80% a no a b
15 b 0% 100% 876 14.27% a + c no a b
17 c 0% 100% 946 14.00% a yes a b
19 c 0% 100% 180 12.20% a + c no a a
28 b 20% 80% 158 13.80% a + c yes a b
38 a 0% 100% 800 11.00% b no c b
41 b 46% 54% 435 12.00% a yes a a + b
48* c 94% 6% 237 14.35% b yes a b
49* c 75% 25% 112 12.00% b no b b
67* c 91% 9% 110 10.00% a no b b
Tot. e% 29% 71% 10418 12.61%   no 55.46%    
a: Blood agar Columbia CNA ; b: Chromogenic media
c: Blood agar; d: other culture media
Table 2: Laboratories with positivity between 10% and 15% in the investigation of screening.