Authorities in the Houthi-held Yemeni capital Sanaa are sterilizing water supplies at wells, distribution networks and houses to help stem the world's worst outbreak of cholera.
Nearly four years of war between a Saudi-led coalition and the Iranian-aligned Houthi group have crippled health care and sanitation systems in Yemen, where some 1.2 million suspected cholera cases have been reported since 2017, with 2,515 deaths.
The World Health Organization (WHO) warned in October that the outbreak is accelerating again with roughly 10,000 suspected cases now reported per week, double the average rate for the first eight months of 2018.
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