Reinfestation after treatment is an indicator of poor sanitation.

治疗后再次感染表明卫生状况较差。

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Infections are caused by unsafe water, poor housing conditions and poor sanitation.

感染是由不安全的水、恶劣的住房条件和不良的卫生设施引起的。

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Most people in areas of the world with poor sanitation have been infected with this virus.

在世界上环境卫生较差地区生活的大多数人都感染过这种病毒。

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But the work is still around, in part because of the poor sanitation system in India.

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It has a dangerous mix of poor sanitation, high population density and limited health services.

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More broadly, dirty water and air, and poor sanitation, are the biggest preventable causes of death.

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