假如水源被甲肝病人的大便或其它排泄物污染，往往可以引起甲肝爆发流行。
If fountainhead by the defecate of armour liver patient or other fecal pollution, often can cause armour liver to erupt popular.
假如水源被甲肝病人的大便或其它排泄物污染，往往可以引起甲肝爆发流行。
If fountainhead by the defecate of armour liver patient or other fecal pollution, often can cause armour liver to erupt popular.
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