Table 4.
Susceptibilities of L. monocytogenes reference strains to listeriaphages
L. monocytogenes strain | Serotype (lineage) | No. (%) of phage lysis groupsa lysing specific strain | No. (%) of phages lysing specific strain | % prevalence of phage susceptibilityb (95% CI) |
---|---|---|---|---|
Non-serotype 4 strains | 51.9 (35.5–67.8) | |||
MACK | 1/2a (II) | 8 (89) | 85 (74.6) | |
FSL J1-175 | 1/2b (I) | 4 (44) | 29 (25.4) | |
FSL J1-094 | 1/2c (II) | 6 (67) | 46 (40.4) | |
FSL C1-115 | 3a (II) | 6 (67) | 35 (30.7) | |
FSL J1-169 | 3b (I) | 4 (44) | 26 (22.8) | |
FSL J1-049 | 3c (I) | 0 | 0 | |
Serotype 4 strains | 88.9 (80.3–94.0) | |||
FSL F2-695 | 4a (IIIA) | 8 (89) | 101 (88.6) | |
FSL J1-208 | 4a (IV) | 9 (100) | 101 (88.6) | |
F2365 | 4b (I) | 8 (89) | 72 (63.2) | |
FSL F2-501 | 4b (IIIA) | 8 (89) | 93 (81.6) | |
FSL J1-158 | 4b (IV) | 8 (89) | 84 (73.7) | |
FSL W1-110 | 4b (IIIC) | 7 (78) | 88 (77.2) | |
FSL J2-071 | 4c (IIIA) | 8 (89) | 99 (86.8) |
See Table S2 in the supplemental material for details on the 9 lysis groups. A phage lysis group was classified as lysing a reference strain if any phages in a given lysis group showed lysis on a given host strain.
Prevalence of phage susceptibility (P < 0.001) among reference strains that were classified into non-serotype 4 strains and serotype 4 strains.