Skip to main content

Table 3 Absolute risk of laboratory-confirmed influenza infection in healthcare workers by the type of mask worn

From: Risk of SARS-CoV-2 transmission by aerosols, the rational use of masks, and protection of healthcare workers from COVID-19

Study

Included Patients (n)

Randomization

Incidence of laboratory-confirmed influenza infection

Mask

Respirator

Loeb, 2009 [52]

446

Individual

22.2%

21.7%

MacIntyre, 2011 [53]

1441

Cluster

1.2%

0.4%

MacIntyre, 2013 [43]

1669

Cluster

0.3%

0.5%

Radanovich, 2019 [54]

2862

Cluster

7.3%

8.3%

  1. Adapted from Bartasko et al. [45]