Previously, the Marvel/Disney+ series had a planned shoot in Puerto Rico cancelled due to a 6.4 magnitude earthquake. Now, production of the series has completely halted due to the coronavirus outbreak in Prague, Czech Republic. Per Deadline:

The Falcon and the Winter Soldier stars Anthony Mackie and Sebastian Stan as Falcon and Winter Solider respectively, which are of course the characters they’ve been playing in the MCU. Emily VanCamp and Daniel Bruhl are also reprising their MCU roles. The series is written by Derek Kolstad (John Wick), Michael Kastelein (Truth Be Told), and Malcolm Spellman (Empire), with direction from Kari Skogland (The Punisher). Kevin Feige serves as executive producer, alongside Spellman and Zoie Nagelhout (Black Panther).

The Falcon and the Winter Soldier Production Halted Due to Coronavirus - 99