Border workers at Auckland Airport have been volunteering saliva samples for a fast-turnaround, accurate saliva test for Covid-19, Stuff reports. New Zealand-based Rako Science has established Covid-19 surveillance testing using the SHIELD saliva test developed at the University of Illinois in the United States. In addition to the mandatory nasal-swab, staff at Auckland Airport are volunteering to take part in the Rako Science saliva screening service. Auckland Airport corporate services general manager Mary-Liz Tuck said the airport joined forces with the Kiwi business to make asymptomatic testing simple and comfortable for airport and border workers, while providing protection for the community.