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Volume 31, Number 7—July 2025
Synopsis
Human Streptococcus suis Infections, South America, 1995–2024
Table 2
Characteristics of patients and isolates for the 8 new cases of human Streptococcus suis infection from Argentina, South America, 2017–2024*
| Year | Patient |
Isolate |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age, y/sex | Disease | Contact with swine or pork | Outcome | Notes | Isolate ID | Source | Serotype | ST | Virulence markers | |||
| 2017 |
42/M |
NVE |
Yes, pig farmer |
Survived |
None |
26-17 |
Blood |
Untypable† |
1 |
mrp, epf, sly |
||
| 2018 |
1/F |
Meningitis |
Unknown, lived in rural area |
Survived |
None |
868-18 |
Blood |
2 |
1 |
mrp, epf, sly |
||
| 2019 |
Adult/M‡ |
Meningitis |
Unknown |
Survived |
None |
724-19 |
CSF |
2 |
1 |
mrp, epf, sly |
||
| 2020 |
38/M |
Meningitis |
No, lived in urban area |
Survived |
Inhalation drug user |
247-20 |
Blood, CSF§ |
2 |
1 |
mrp, epf, sly |
||
| 2021 |
47/M |
Meningitis |
Yes, consumed pork |
Survived |
Wild boar hunter |
521-21 |
Blood, CSF§ |
2 |
1 |
mrp, epf, sly |
||
| 2022 |
48/M |
Meningitis |
Yes, consumed pork |
Survived |
Wild boar hunter |
395-22 |
CSF |
2 |
1 |
mrp, epf, sly |
||
| 2022 |
45/M |
Meningitis |
Yes, handled not commercial pig |
Survived |
None |
931-22 |
CSF |
2 |
1 |
mrp, epf, sly |
||
| 2024 | 55/M | STSLS | Yes | Died | None | 649-24 | Blood | 2 | 1 | mrp, epf, sly |
||
*ID, identification; CSF, cerebrospinal fluid; epf extracellular protein factor; mrp, muramidase released protein; NVE, native valve endocarditis; sly, suilysin; STSLS, streptococcal toxic shock–like syndrome; ST, sequence type as defined by multilocus sequence typing. †Untypable by both serologic and molecular methods. ‡Precise age not available. §Only the isolate recovered from CSF was included in this investigation, although both were typed.