China
Retrospective cohort study
Online questionnaire
72
HCWs (>18 years of age) with acute respiratory symptoms in a single-center setting, who worked at the forefront to fight against COVID-19 since it outbroke
Ages ranged from 21 to 66 years with a median (interquartile range, IQR) of 31 (28-40,12). 22 are males and 50 are females
0
SARS COV-2 infection
28
The diagnosis of COVID-19 conformed to Diagnosis and treatment of novel coronavirus pneumonia (Trial Version 3)?? issued by the National Health Commission of the People??s Republic of China. All cases were diagnosed with the test by PCR nucleic acid.
Patient characteristics
Medical operation and protection
Performed sputum suction
Did not perform sputum suction
26
61
2
11
Relative risk
0.430 (0.120-1.550)
No
Not applicable
None
Average