Table 1

Sociodemographic, clinical and epidemiological characteristics of the initial 139 confirmed cases in the Belgian MPX outbreak based on routine surveillance data

Patient characteristics (N=139)
Age (years)
Median (IQR, range)38 (32–43; 20–62)
Time between symptom onset and clinical diagnosis (days)
Median (IQR, range)6 (4–8; 0–21)
n%
Gender
Male139100
Sexual identity
Gay/bisexual13295
Heterosexual43
Unknown32
Reported symptoms*
General symptoms (fever, general malaise, fatigue, headache, myalgia)9770
Skin lesions in anogenital area and other body parts7655
Skin lesions only outside the anogenital area2921
Skin lesions only in the anogenital area2619
Localised lymphadenopathy4029
Generalised lymphadenopathy1410
Respiratory symptoms (cough, sore throat)32
Unknown54
Hospitalisation due to MPX
No13194
Yes86
HIV status and PrEP use
HIV negative and on PrEP5237
HIV positive4029
HIV negative and not on PrEP/PrEP status unknown3223
Unknown HIV status1511
Suspected setting of exposure†‡
Private setting4532
Festival4130
Cruising venue2518
Social event21
Unknown2619
Suspected route of transmission
Sexual contact11583
Other person-to-person transmission43
Unknown2014
Travel outside Belgium in the 21 days prior to symptom onset
No7957
Yes5237
Unknown86
Contact of other confirmed MPX case
No6648
Yes2820
Unknown4532
  • *Several symptoms could be reported by each case.

  • †Several suspected settings of exposure could be reported by each case.

  • ‡The categories we used for exposure setting are based on the categories used for reporting to ECDC. The category ‘festival’ includes large events that were attended by cases where they did or did not have sexual contacts. The category ‘cruising venues’ includes visits at nightclubs, party, sauna or similar settings with having sexual contacts. The category ‘social event’ includes visits at bar, restaurant or other small events where there was no sexual contact reported. Other exposure settings reported by the cases in our study fit under the category ‘private setting’.

  • ECDC, European Centre for Disease Prevention and Control; MPX, monkeypox; PrEP, pre-exposure prophylaxis.