New arrivals at two Auckland managed isolation and quarantine (MIQ) hotels have been halted until the outcome of an inquiry is reached as to how Covid-19 spread among staff and returnees at the facilities, Stuff reports. It affects Grand Mercure and the Grand Millennium hotels in Auckland’s CBD. The hotels both stopped taking returnees on April 14 and will not take any more until the outcome of the review, expected at the end of the month, is known. The joint Ministry of Health and Managed Isolation and Quarantine Technical Advisory Group is looking at potential sources of transmission, including an investigation of ventilation systems.