Covid 19 coronavirus: 'Huge challenge' to solve airport worker case who did everything right 21 Apr, 2021 06:12 AM 4 minutes to read No audit done on border employers. Video / Mark Mitchell Derek Cheng is a political reporter for the New Zealand Heraldderek.cheng@nzme.co.nz More frequent border testing and a stand-down period before cleaners can board an international flight after it lands are being mooted as further layers of protection against Covid-19. The suggestions follow the case of the Auckland airport worker, who appears to have caught the virus after cleaning a plane that arrived on April 10 with a passenger who later tested positive.