Following reports a new strain of mpox arriving in Sweden, the EU’s health agency has urged preparedness. The ECDC said new cases are “highly likely” but the risk remains “low.”

The European Union’s health agency urged the bloc’s member states to prepare for more cases of the deadly mpox infection on Friday, a day after the first case outside of Africa was reported in Sweden.

The European Centre for Disease Prevention and Control (ECDC) said the level of risk remained “low” but that it “recommends that public health authorities in the EU/EEA maintain high levels of preparedness planning and awareness-raising activities to enable rapid detection and response.”