Local authorities of other provinces like Tra Vinh, Bac Lieu and Ca Mau issued the same decision on Wednesday.
The epidemic has claimed 493 lives and sickened 24,567 as of Wednesday morning, according to the Vietnamese Ministry of Health.
In Viet Nam, health sector has confirmed 10 infection cases and two of them have been discharged from hospital after successfull treament, including one Chinese tourist, Li Zichao.
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By Thuy Dung