To the Editor: We congratulate Buising and colleagues1 on their article published in the MJA and agree that the approach needs to be multidimensional and iterative. To expand upon the multidimensional theme of their article, we would like to emphasise the need for the approach to be multidisciplinary and to include the whole of the health service workforce. The article highlighted the ubiquitous nature of coronavirus disease 2019 (COVID-19) transmission in health care settings, with 18.3% (or almost one in five) of health care workers infected, and that these workers are traditionally regarded as non-clinical staff (food services, environmental services, administrative and security staff). The non-clinician workforce has been overlooked in other research investigating COVID-19 transmission risk factors.2