In dit mooi document van de WHO op pagina 26 kunnen we lezen, zwart op wit, de volgende:
OVERALL RESULT OF EVIDENCE ON FACE MASKS:
- Ten RCTs were included in the meta-analysis, and there was no evidence that face masks are effective in reducing transmission of laboratory-confirmed influenza.
Verder nog:
Non_pharmaceutical_pandemic_measuresResource implications:
Reusable cloth face masks are not recommended.
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