Volume 29, Number 12—December 2023
Research Letter
Genome-Based Characterization of Listeria monocytogenes, Costa Rica
Table
Sequence types identified in a genome-based characterization of Listeria monocytogenes, Costa Rica*
cgMLST type | CC | Serogroup | No. isolates (%) |
Food type | Isolation years | Genetic resistance traits | ||
---|---|---|---|---|---|---|---|---|
Total, n = 92 | Clinical, n = 16 | Nonclinical, n = 76 | ||||||
L1-SL2-ST2-CT2715 |
CC2 |
IVb |
8 (9) |
4 (25) |
4 (5) |
Dairy, meat |
2009, 2011, 2013, 2016–2017 |
bcrABC, qacA, LGI-2 |
L1-SL2-ST2-CT6120 |
CC2 |
IVb |
10 (11) |
2 (13) |
8 (9) |
Dairy |
2010, 2013, 2016, 2018–2019 |
qacA, LGI-2 |
L1-SL2-ST2-CT2718 |
CC2 |
IVb |
5 (5) |
1 (6) |
4 (5) |
Dairy |
2016, 2019 |
qacA |
L1-SL2-ST1251-CT2780 |
CC2 |
IVb |
3 (3) |
1 (6) |
2 (3) |
Meat |
2015–2016, 2018 |
qacA |
L1-SL3-ST3-CT2730 |
CC3 |
IIb |
9 (10) |
0 |
9 (10) |
Fish, meat |
2016 |
bcrABC, SSI-1 |
L1-SL2-ST2-CT6072 |
CC2 |
IVb |
5 (5) |
0 |
5 (7) |
Dairy |
2019 |
LGI-2 |
L1-SL2-ST1627-CT6041 |
CC2 |
IVb |
5 (5) |
0 |
5 (7) |
Dairy |
2018–2019 |
LGI-2 |
L1-SL87-ST847-CT65 |
CC87 |
IIb |
2 (2) |
0 |
2 (3) |
Meat |
2016, 2019 |
NA |
L1-SL3-ST1262/ST2762-CT2781 |
CC3 |
IIb |
2 (2) |
0 |
2 (3) |
Dairy |
2013 |
SSI-1 |
L1-SL5-ST5-CT2793 |
CC5 |
IIb |
2 (2) |
0 |
2 (3) |
Fish, meat |
2016 |
bcrABC, SSI-1 |
L1-SL2-ST2-CT2762 | CC2 | IVb | 2 (2) | 0 | 2 (3) | Mushrooms | 2011 | LGI-2 |
*Table includes types detected in this study comprising >2 isolates with a cutoff of 7 allelic differences, n = 11/48. CC, clonal complex; cgMLST, core-genome multilocus sequence typing; LGI, Listeria genomic island; NA, not applicable; SSI, stress survival islet.
1These first authors contributed equally to this article.
2Current affiliation: Humboldt-Universität zu Berlin, Berlin, Germany.
3Current affiliation: Universidad Autónoma de Chile, Temuco, Chile.