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Volume 29, Number 6—June 2023
Dispatch

Results of PCR Analysis of Mpox Clinical Samples, Sweden, 2022

Jon Edman-Wallér1Comments to Author , Ola Jonsson1, Gustav Backlund1, Shaman Muradrasoli, and Klara Sondén
Author affiliations: Sahlgrenska University Hospital, Gothenburg, Sweden (J. Edman-Wallér); University of Gothenburg Institute of Biomedicine, Gothenburg (J. Edman-Wallér); Linköping University Hospital, Linköping, Sweden (O. Jonsson); Falu Hospital, Falun, Sweden (S. Muradrasoli); Public Health Agency of Sweden, Solna, Sweden (S. Muradrasoli, K. Sondén); Karolinska Institute Department of Medicine, Solna (K. Sondén)

Main Article

Table

Mpox PCR tests, specimen types, and cycle threshold levels for 104 patient samples analyzed at the Public Health Agency of Sweden, May 24–September 2, 2022*

Specimen type Samples
Ct values of positive samples
Patients
Total no. No. positive Positive, % Median 25th percentile 75th percentile Total no. ≥1 positive samples
Skin lesion 178 148 83.1 23.6 20.6 28.6 96 92
Rectum 22 21 95.5 23.0 21.0 31.2 22 21
Throat 16 10 62.5 30.9 27.5 32.3 15 10
Blood† 17 8 47.1 37.6 36.0 38.0 8 7
Semen 6 4 66.7 32.9 31.1 35.2 5 3
Nasopharynx 13 4 30.8 34.9 32.8 36.6 5 3
Saliva 10 8 80.0 35.1 32.0 37.0 3 3
Sputum 8 5 62.5 31.2 30.2 35.0 4 2
Urine 7 2 28.6 30.3 28.6 32.0 5 2
Other 3 1 50.0 20.6 20.6 20.6 2 1
Unknown 9 4 50.0 22.1 21.2 23.1 4 2

*Ct, cycle threshold.
†Blood includes whole blood, plasma, and serum samples.

Main Article

1These authors contributed equally to this article.

Page created: March 20, 2023
Page updated: May 17, 2023
Page reviewed: May 17, 2023
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