Hon CHRIS HIPKINS: In the case of New Zealand, where we're aiming to identify every single case of COVID-19 that might exist within the community, we need to have a test that is as accurate as possible, and a PCR test, be it saliva or through a throat or a nasal swab, is regarded internationally as the gold standard for reliability of testing methodologies. Other countries that are using things like rapid antigen tests are doing so in the context, usually, of widespread community transmission, where missing a few cases here and there has a lower consequence than it does in New Zealand.