Targeted reduction of airborne viral transmission risk in residential aged care

COVID-19 has demonstrated the devastating consequences of the rapid spread of an airborne virus in residential aged care. We report the use of CO2-based ventilation assessment to empirically identify potential “super-spreader” zones within an aged care facility, and determine the efficacy of rapidly implemented, inexpensive, risk reduction measures. ### Competing Interest Statement The authors have declared no competing interest. ### Funding Statement This study was funded through the Australian Medical Research Future Fund (GNT2005904). SLT is supported by an NHMRC Emerging Leader Fellowship (GNT1195421). GBR is supported by an NHMRC Senior Research Fellowship (GNT1155179) and a Matthew Flinders Professorial Fellowship. CM is supported by an NHMRC Emerging Leader Fellowship (GNT1195421). ### Author Declarations I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. Yes I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals. Yes I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). Yes I have followed all appropriate research reporting guidelines and uploaded the relevant EQUATOR Network research reporting checklist(s) and other pertinent material as supplementary files, if applicable. Yes All data produced in the present study are available upon reasonable request to the authors