Franks was put on the reserve/COVID-19 list Tuesday, Tori McElhaney and Scott Bair of the Falcons' official website report.
The quarterback tested positive for the virus Tuesday, and he was promptly placed on the reserve/COVID-19 list. Franks has been serving as the primary backup option to Matt Ryan for the past few weeks, but Josh Rosen will likely step back into that role while he's out.