FREETOWN, Jan. 10 (Xinhua) -- Sierra Leone's National Public Health Agency (NPHA) and the Ministry of Health have confirmed an active outbreak of cutaneous ulcers caused by Haemophilus ducreyi in the ...

近日，韩国、日本、意大利等国新冠肺炎确诊病例急剧增加，epidemic和pandemic这两个词频频在外媒报道中出现。那么到底应该用epidemic，还是pandemic呢？ Tourists wearing protective masks walk near Duomo square, as a coronavirus outbreak continues to grow in ...