Timeline of reported cases
Late April: An unidentified children’s illness reported in Europe
May 9: Illness claims three children in New York, US, and one in France
May 13: Casualty occurs in the UK; UK, France, US together confirm over 100 cases
May 23: Mystery children’s illness spreads to 13 countries (25 states in the US)
May 25: Korea launches disease surveillance systems
May 26: Korea sees two suspected cases of the rare pediatric condition, both in Seoul