2020 Tablighi Jamaat COVID-19 hotspot in Delhi

A Tablighi Jamaat religious congregation that took place in Delhi's Nizamuddin Markaz Mosque in early March 2020 was a COVID-19 super-spreader event, with more than 4,000 confirmed cases and at least 27 deaths linked to the event reported across the country. Over 9,000 missionaries may have attended the congregation, with the majority being from various states of India, and 960 attendees from 40 foreign countries.

Source: Wikipedia — 2020 Tablighi Jamaat COVID-19 hotspot in Delhi (CC BY-SA 4.0)