Ibrahim Ali al-Jadari¡¯s four teenage daughters lie at home on intravenous drips that will soon run out as they, like tens of thousands of other Yemenis, battle a seasonal surge of dengue fever.

Mosquito-borne dengue is the latest challenge facing Yemenis who have endured almost five years of a conflict that has killed thousands, pushed millions to the brink of famine and caused major cholera outbreaks.

¡°We don¡¯t have a penny to pay for (more) treatment. Our children are dying on their beds and we can¡¯t do a thing,¡± Jadari said from his makeshift home of rushes and canvas in the hills of Hajjah district, one of Yemen¡¯s poorest.