In1998, however, the incidence of diphtheria rose once again, and67 patients were registered.
但是1998年，白喉的发病率再次上升，登记在案的有67例。
Diphtheria and whooping cough are transmitted through the air from respiratory secretions of infected patients.
百喉及百日咳可由患者呼吸道分泌物通过空气传播。
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