BioMed Research International / 2015 / Article / Tab 4

Research Article

Characterization of Shiga Toxigenic Escherichia coli O157 and Non-O157 Isolates from Ruminant Feces in Malaysia

Table 4

Occurrence of target virulence factors and “big 6” non-O157 serogroups in the initial PCR screen of the enriched samples from each farm (A–F).

Farm Number of samples testedPercent positive for virulence gene combinationsaPercent positive for serogroupsa
, , eaeA, ehxA , , ehxA or , eaeA, ehxA , ehxA , ehxA eaeA, ehxA eaeA or aloneO111O26O121O145O45O103

A256.62.9001.5000005.903.75.1
B4413.22.90000000.79.613.202.216.2
C92.90000.72.20.7002.90.71.53.75.1
D241.54.41.5000.702.908.100.70.710.3
E185.92.90.7000003.74.40.70.78.17.4
F1602.201.50000000000

Total13630.115.42.21.52.22.90.72.94.42520.62.918.444.1

The percentage of samples positive were calculated by dividing the number of positive samples for each category in the initial PCR screen by the total number of samples () collected.