What is particularly troubling is the question of whether it may be related to the worldwide spread of AIDS, as it seems to be in the United States.
與愛滋病狼狽為患結核病例止跌回升的原因猶待追蹤。比較起美國的病例增加趨勢，則教人擔心是否有世界性傳染病大流行的可能。