Prevalence of adhesin and toxin genes in E. coli strains isolated from diarrheic and non-diarrheic pigs from smallholder herds in northern and eastern Uganda

Table 2 Virulence factors (given both separately and in the various combinations) detected in E. coli isolates

Virulence factor(s)	No. with diarrhea [32]		No. without diarrhea [51]		No. positive	Prevalence %
Virulence factor(s)	Suckling Piglets [18]	Weaners [14]	Suckling Piglets [44]	Weaners [7]	No. positive	Prevalence %
STa	0	0	1	0	1	1.2
STb	7	2	10	3	22	26.5
EAST 1	6	2	12	4	24	29
Stx2e	0	1	0	1	2	2.4
LT	0	0	0	0	0	0
F4	4	0	3	0	7	8.4
F5	0	0	0	0	0	0
F6	0	0	0	0	0	0
F18	0	0	0	0	0	0
F41	0	0	0	0	0	0
AIDA	1 ^b	1	1	1	4 ^a	16
F4/STb/EAST1	3	0	3	0	6	7.2
F4/STb	1	0	0	0	1	1.2
AIDA/STb/EAST1	1	0	0	1	2 ^a	8
AIDA/STb	0	1	1	0	2 ^a	8
STb/EAST 1	0	1	2	2	5	6
EAST1/Stx2e	0	1	0	1	2	2.4
STb/STa/EAST1	0	0	1	0	1	1.2

One E. coli isolate was analysed from each pig
^a The number of AIDA-I-positive isolates originating from 25 isolates since only the fimbriae-negative but toxin-positive isolates were analysed
^b The number of AIDA-I-positive isolates from 5 isolates analysed from diarrheic piglets

ISSN: 1471-2180