He told a press conference that health care professionals and their families still made up the majority of cases indicating that the disease was transmitted by close contact and that it was very infectious in its late stages 他今日在美利大厦举行的新闻简报会上表示，大部分的感染个案仍然为医护人员及其家属，显示疾病是通过密切接触而传播的，而且在病发后期传染度极高。
