On the morning of 11 January, Ai received the news that Hu Ziwei, a nurse of the emergency department, had been infected. Ai called her superiors immediately and the hospital had an emergency meeting, in which the officials directed to change the medical observations of the infected nurse from "viral pulmonary infection?" to "spread-out pulmonary infection." In a meeting on 16 January, officials of the hospitals insisted on denying the existence of transfer of this virus infection among humans.
