BEIJING (AP) – Teams in white protective suits are going into the homes of coronavirus-infected people to spray disinfectant as Shanghai tries to root out an omicron outbreak under China’s strict “zero-COVID” strategy. Shanghai also suspended service on the last two subway lines that were still operating Tuesday, marking the first time the city’s entire system has been shut down. The latest measures come as Shanghai has ordered people in some districts to stay in their homes again after letting some out for limited shopping in recent weeks. The latest steps have further frustrated residents, who were hoping a more than month long lockdown was finally easing as the number of new cases in the city falls.