Objective Previous meta‐analyses concluded that there was insufficient evidence to
determine the effect of N95 respirators. We aimed to assess the effectiveness of N95
respirators versus surgical masks for prevention of influenza by collecting randomized
controlled trials (RCTs). Methods We searched PubMed, EMbase and The Cochrane Library
from the inception to January 27, 2020 to identify relevant systematic reviews. The RCTs
included in systematic reviews were identified. Then we searched the latest published RCTs …