Volume 29, Number 5—May 2023
Research Letter
Norovirus GII.3[P25] in Patients and Produce, Chanthaburi Province, Thailand, 2022
Watchaporn Chuchaona, Sarawut Khongwichit, Woraya Luang-on, Sompong Vongpunsawad, and Yong Poovorawan
Table
Detection of GII noroviruses in patients and produce samples, Chanthaburi Province, Thailand, 2022*
| VP1 | RdRp gene |
|||||
|---|---|---|---|---|---|---|
| P7 | P12 | P17 | P21 | P25 | P31 | |
| GII.3 | 2/4 | 2/ND | 1/1 | ND | 9/1 | 1/ND |
| GII.4 Hong Kong | 1/ND | ND | ND/1 | ND | ND | 1/2 |
| GII.4 Sydney | 1/ND | ND | ND | ND | 1/ND | ND |
| GII.6 | 3/5 | ND | 1/1 | ND | ND/1 | ND |
| GII.7 | 1/ND | ND | ND | ND | ND | ND |
| GII.17 | ND | ND | 2/1 | ND | ND | ND |
| GII.21 | ND/1 | ND | 2/ND | 2/ND | ND | ND |
*Values indicate patient samples/produce samples positive for norovirus (e.g., the GII.3[P7] combination was detected in 2 patient and 4 produce samples). Several VP1 and RdRp combinations are detected in patient and produce samples. Produce samples were obtained from open-air markets near the infection cluster and sent by local health officials for testing to determine a potential norovirus source. ND, not detected; P, polymerase; RdRp, RNA-dependent RNA polymerase; VP, viral protein.
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