Officials estimate that about 120 people attended the afternoon event, which included a barbecue, a sweets station, and three bouncy castles. Around half of the attendees were children and teens. Within a day of the gathering, some children began showing signs of infection.
Of the 48 confirmed cases, 33 were treated by their regular doctor, while 15 required emergency care. Four children were hospitalized. All children eventually recovered.
The outbreak investigation, reported in Eurosurveillance, identified the bouncy castle as the likely source of transmission. The surface of the inflatable play equipment provided an ideal medium for the spread of the pathogen, as children bounced and slid against it, spreading bacteria through contact.
Health authorities did not disclose the specific location of the event in Ireland, but the case highlights the risks associated with shared recreational equipment at community gatherings.