The majority of cases in January and early February came from the same automobile-parts business place as the first case. On 25 and 26 February, multiple cases related to the Italian outbreak were found in Baden-Württemberg. A large number linked to a carnival event was formed in Heinsberg, North Rhine-Westphalia, with the first death reported on 9March 2020. New larger groups were found in other regions via Heinsberg as well as by people arriving from China, Iran and Italy, from where non-Germans could arrive by plane until 17–18 March.