So in other words, more big periodic outbreaks.

- 换句话说，更大规模的周期性爆发。

Typhoid, paratyphoid, dysentery, polio, viral hepatitis and food poisoning are endemic in the area and there are periodic outbreaks of cholera.

伤寒、副伤寒、痢疾、小儿麻痹症、病毒性肝炎和食物中毒在该地区流行，并定期爆发霍乱。