The Strong Case for Mask Requirements in Public Transportation and Border Control Settings in NZ’s Current COVID-19 Pandemic Context
Prof Nick Wilson, Dr Sophie Febery, Dr Ling Chan, Dr Amanda Kvalsvig, Prof Michael Baker
In this blog we identify six likely benefits from requiring fabric mask use in public transportation and border control settings in the “peri-elimination” context that New Zealand is currently in.
Given these likely benefits and the relatively low costs (especially if the Government provides free masks as per Hong Kong), such a policy should be given very serious consideration by health authorities in the transition to level 2.
As detailed in a previous blog post, the case for mass masking (i.e., wearing masks for source control as a population health intervention) for SARS-CoV-2 control is becoming increasingly compelling and many countries are adding masking policies to their pandemic response.
High quality randomised controlled trial (RCT) evidence on mass masking is not available. However, there is significant indirect evidence from natural experiments occurring within mask-wearing countries which indicates mask use is an effective public health measure when combined with hand washing and physical distancing.
SARS-CoV-2 is highly infectious, with a large proportion of asymptomatic (including pre-symptomatic) transmission, implying the need for additional control measures, notably widespread use of masks by the public [1].