The spread of TB bacteria depends on factors such as the number and concentration of infectious people in any one place together, and the presence of people with a higher risk of being infected (such as those with HIV/AIDS).
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以往未受感染者与传染性病例在同一间房间内度过的时间越长,受感染的可能性越大。
The likelihood of becoming infected increases with the time that a previously uninfected person spends in the same room as an infectious case.
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在结核菌含量高的情况下,传播的风险增加,例如可发生在过度拥挤的住房、医院或监狱等通风不良的环境中。
The risk of spread increases where there is a high concentration of TB bacteria, such as can occur in poorly-ventilated environments like overcrowded houses, hospitals or prisons.
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如果传染性患者获得适当治疗,传播的风险将减少。
The risk of spread is reduced if infectious patients receive timely and proper treatment.