Use of FFP2 or FFP3 masks by EMS Employees

Medical Doctor—Answer: Yes

(n = 400)

Paramedical Staff—Answer: Yes

(n = 2078)

p-Value

SARS-CoV-2 positive patient

400

2072

0.231*

No sign of SARS-CoV-2 infection

386

2062

0.115*