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First Online: 3 July 2024

Competing interests

: N.H.L.L. discloses support from the Theme-based Research Scheme (T11-712/19-N; T11-705/21-N) from the Research Grants Council and the Health and Medical Research Fund (20190502) from the Health Bureau of the Hong Kong Special Administrative Region, China. D.K.M. discloses support from the US National Institutes of Health, The Flu Lab and Balvi Filantropic Fund, and stock options from Lumen Bioscience, Inc. While both authors were part of the WHO consultation group advising on the referred report on proposed terminology for pathogens that transmit through the air (TTAT), and N.H.L.L. on indoor airborne risk assessment (ARIA), this Comment is solely the responsibility of both authors and does not represent the official views of TTAT, ARIA or WHO. The authors report no other competing interests.