Middlemore Hospital is on a mission to test every patient for Covid-19 - to see if the disease is circulating undetected in South Auckland.
Mobile testing teams are going bed-to-bed with the offer of a swab - even if patients have no symptoms.
Five infected patients turned up at the hospital last week, not realising they had the virus.
Counties Manukau DHB chief medical officer Dr Peter Watson spoke to Corin Dann.
