PRO/AH/EDR> COVID-19 update (245): UK, Israel, mask trial retraction, Eurosurveillance, WHO

COVID-19 — Worldwide/Unknown
The Research Letter, “Experimental Assessment of Carbon Dioxide Content in Inhaled Air with or without Face Masks in Healthy Children: A Randomized Clinical Trial,” by Harald Walach, PhD, and colleagues published online in JAMA Pediatrics on 30 Jun 2021 is hereby retracted. Following publication, numerous scientific issues were raised regarding the study methodology, including concerns about the applicability of the device used for assessment of carbon dioxide levels in this study setting, and