Belgium has become the first country to introduce a mandatory 21-day monkeypox quarantine

From the UK earlier, recommended, not mandatory 9for how long?):

• Monkeypox - High-risk contacts of cases advised to self-isolate for three weeks

Belgium, though, has become the first country to introduce a mandatory 21-day monkeypox quarantine for those who contact the virus. Three cases were recorded in the country.