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Volume 31, Number 8—August 2025
Dispatch
Case Report of Clade Ib Monkeypox Virus Infection Linked to Travel to Democratic Republic of the Congo, Thailand, 2024
Drunphob Srithammavong
, Chanunya Srihawan1, Rossaphorn Kittiyaowamarn1, Rapeepong Suphanchaimat1, Thitipong Yingyong1, and Wichan Bunyakitikorn1
, Chanunya Srihawan1, Rossaphorn Kittiyaowamarn1, Rapeepong Suphanchaimat1, Thitipong Yingyong1, and Wichan Bunyakitikorn1
Table 1
Diagnostic laboratory results for swab samples from index patient who had clade Ib monkeypox virus infection linked to travel to the Democratic Republic of the Congo, Thailand, 2024*
| Sample no. | Laboratory | Collection point, lesion type | No. days† | Laboratory results according to method |
||
|---|---|---|---|---|---|---|
| Real-time PCR (Ct) | WGS | Culture | ||||
| 1 |
Private laboratory |
Genitalia, combined vesicle and pustule |
6 |
MPXV F3L gene detected (13.73); D14L gene, inconclusive signal for clade I, not detected for clade II |
NA |
NA |
| TRC-EIDCC |
MPXV detected (15.03) |
NA |
NA |
|||
| Thailand NIH |
NA |
MPXV clade Ib‡ |
NA |
|||
| 2 |
BIDI |
Genitalia and extremities, combined vesicle, pustule, and ulcerated lesion |
11 |
MPXV clade II detected (21.4) |
NA |
NA |
| 3 |
Thailand NIH |
Left arm, fallen-off scab |
19 |
ND |
NA |
NA |
| Trunk, fallen-off scab |
ND |
|||||
| Right leg, beneath scab |
MPXV detected (25.17) |
|||||
| Left toes, beneath scab |
MPXV detected (26.07) |
|||||
| Genitalia, ulcerated lesion |
MPXV detected (34.16) |
|||||
| 4 | Thailand NIH | Left leg, fallen-off scab |
23 | MPXV detected (38.48) |
NA | ND |
| Right leg, fallen-off scab |
MPXV detected (30.88) |
|||||
| Genitalia, fallen-off scab |
MPXV detected (31.12) |
|||||
| Left toes, fallen-off scab, fully formed new skin layer | MPXV detected (33.37) | |||||
*BIDI, Bamrasnaradura Infectious Disease Institute; Ct, cycle threshold; MPXV, monkeypox virus; NA, not applicable; ND, not detected; NIH, National Institute of Health; TRC-EIDCC, Thai Red Cross Emerging Infectious Disease Center. †Number of days after onset of symptoms. ‡GISAID accession no. EPI_ISL_19350788 (https://www.gisaid.org).
1These senior authors contributed equally to this article.
Page created: June 13, 2025
Page updated: June 18, 2025
Page reviewed: June 18, 2025
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