高原 发表于 2025-3-30 10:09:23
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Prevention of Typhoid Fever,carriers (chronic or temporary) and clinically ill patients can contaminate water supplies. If treatment of water sources is inadequate or unavailable, water can serve as an important vehicle of transmission (Mermin et al., 1999). Consumption of contaminated water and food vehicles by susceptible su优雅 发表于 2025-3-30 17:31:14
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http://reply.papertrans.cn/43/4285/428449/428449_54.pngCROW 发表于 2025-3-31 03:32:01
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