机构官员说死于传染病的人数在减少。
Agency officials say fewer people are dying of infectious diseases.
作者是美国国家过敏症和传染病研究所所长，该研究所是国家卫生学会的下属机构。
The writer is director of the National Institute of Allergy and Infectious Diseases, a part of the National Institutes of Health.
狂犬病病毒，一种通过通过染病动物的唾液传播的病毒，仍旧令健康及野生动物机构头疼。
Rabies, a deadly virus transmitted through the saliva of infected animals' bites, still poses problems for health and wildlife authorities.
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