Similar thing happened in France: an Evangelical church gathering in Mulhouse, the third week of February, gathered about 2000 people in close contact for a whole week. They then came back home propagating the virus all over France, including Corsica and all the way to French Guyana.

To this day the region of Mulhouse and Colmar (south of Strasbourg) is one of the largest number of cases in ICU in the nation (a few dozen patients were transferred to western regions by high-speed train to free up IC beds). This Evangelical gathering also explains other clusters of high number of cases in Corsica and in the middle of the Alpes.

Evangelical gathering in Mulhouse: faithful contaminated everywhere in France and up to Guyana - France 24, 3 March 2020

This week of fasting and prayer, organized by the Christian Open Door, one of the largest Protestant evangelical churches in France, brought together around 2,000 people from all over France, including the overseas departments and neighboring countries, in Mulhouse from 17 to February 24. Thirty have been contaminated, according to a first count.

On Wednesday, the Haut-Rhin prefecture had announced the contamination of 10 people in the department in connection with this event, calling on participants to be vigilant and to contact center 15 in the event of symptoms.

On Thursday, what the prefecture feared became reality, with cases identified among church believers returning to many areas, some of which have been spared the epidemic so far.