Bibliographic information
GuidelineWHO guideline on public health and social measures for mitigating the risk and impact of epidemic and pandemic influenza
Year of Publication2026
Issuing InstitutionWorld Health Organization
Recommendation
New
WHO recommends against indoor air purification to reduce the transmission of influenza viruses in community settings during influenza epidemics and pandemics.
Recommended against
Strong
Certainty of evidence
Moderate
Notes and Remarks
Air purification combined with other environmental control measures could be considered in specific settings (such as hospitals) to reduce the transmission of respiratory viruses. However, in community settings, at large scale, ventilation is preferable to air purification.