drop like flies
US /drɑp laɪk flaɪz/
UK /drɑp laɪk flaɪz/

1.
padać jak muchy, umierać masowo
to fall ill, die, or fail in large numbers
:
•
During the flu season, employees started to drop like flies.
W sezonie grypowym pracownicy zaczęli padać jak muchy.
•
The small businesses in the area started to drop like flies after the new superstore opened.
Małe firmy w okolicy zaczęły padać jak muchy po otwarciu nowego supermarketu.