Flight attendant under house arrest for triggering HCMC Covid-19 outbreak By Quoc Thang January 12, 2021 | 10:24 pm GMT+7 Duong Tan Hau (L) listens as a police officer reads a decision to place him under house arrest for investigation for spreading Covid-19 in the community in HCMC, January 12, 2020. Photo by the police. A Vietnam Airlines flight attendant suspected of setting off a Covid-19 outbreak in HCMC last November has been placed under house arrest. Duong Tan Hau, 29, is being investigated for "spreading dangerous infectious diseases in humans." Hau was placed under house arrest after he recovered from Covid-19 and completed a 14-day isolation.