TABLE 3.
Non-livestock straina | NeuB1 | Class A/B | Class C | Livestock straina | NeuB1 | Class A/B | Class C |
---|---|---|---|---|---|---|---|
33106 | + | + | − | 11168H | + | − | + |
33084 | + | + | − | 45557 | + | − | + |
40917 | + | − | + | 31485 | + | − | + |
31481 | − | − | − | 32799 | + | + | − |
56519 | − | − | − | 56282 | + | + | − |
32787 | − | − | − | 44811 | + | − | + |
64555 | − | − | − | 59161 | + | − | + |
43205 | − | − | − | 59214 | + | + | − |
44119 | − | − | − | 30280 | + | − | + |
63326 | + | + | − | 44958 | + | + | − |
62914 | − | − | − | 30328 | + | − | + |
45631 | − | − | − | 58473 | + | + | − |
59364 | − | − | − | 48612 | + | − | + |
52368 | − | − | − | ||||
56832 | + | + | − | ||||
38353 | − | − | − | ||||
12241 | + | + | − | ||||
53259 | + | + | − | ||||
35799 | + | + | − | ||||
62567 | + | − | + |
a PCR analysis used primers that anneal to neuB1 genes to identify strains that encode the SA biosynthesis pathway for human clinical isolates that clustered with either the non-livestock or livestock clades (21). Primers described previously (15) were used to distinguish strains from SA-positive LOS classes A/B from C.