Face masks considerably reduce COVID-19 cases in Germany.
Proc Natl Acad Sci U S A
; 117(51): 32293-32301, 2020 12 22.
Article
in English
| MEDLINE | ID: covidwho-960373
Preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
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This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
ABSTRACT
We use the synthetic control method to analyze the effect of face masks on the spread of COVID-19 in Germany. Our identification approach exploits regional variation in the point in time when wearing of face masks became mandatory in public transport and shops. Depending on the region we consider, we find that face masks reduced the number of newly registered severe acute respiratory syndrome coronavirus 2 infections between 15% and 75% over a period of 20 days after their mandatory introduction. Assessing the credibility of the various estimates, we conclude that face masks reduce the daily growth rate of reported infections by around 47%.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
COVID-19
/
Masks
Type of study:
Observational study
Limits:
Humans
Country/Region as subject:
Europa
Language:
English
Journal:
Proc Natl Acad Sci U S A
Year:
2020
Document Type:
Article
Affiliation country:
Pnas.2015954117
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