New research revealed that variation in national and international guidelines on respiratory protection created confusion among healthcare professionals.

Differences in guidelines on the use of surgical masks and respirators in different countries and organisations during a fast-moving situation such as a pandemic may lead to confusion and anxiety among healthcare professionals, as well as a lack of trust in the ability of the devices to prevent the transmission of SARS-CoV-2.

Researchers analysed the guidelines for infection prevention and control published by leading organisations and agencies in the UK, France, Germany and the US from 1 January to 31 December 2020, noted the variations and looked at the potential reasons for them.

All four countries had different strategies for respirator use. Germany was using them on all COVID-19 cases and suspected cases, while France was using them exclusively on aerosol-generating procedures (AGP). The US was taking a flexible approach, using surgical masks when respirators were not available and the UK had a unit-based strategy, using respirators in high-risk units such as intensive care wards for COVID-19 patients.

The authors conclude, "Inconsistencies in respiratory protection guidelines between neighbouring countries created confusion over optimal measures. Strong collaborations between national and international organisations are critical in such circumstances."