Worldwide, cholera cases increased by 13% last year, from 473 000 in 2022 to more than 535 000 in 2023, according to an epidemiological report by the World Health Organization (WHO). The cases were reported in 45 countries, up from 44 in 2022 and 35 in 2021. Deaths also increased, from 2350 deaths in 2022 to 4007 in 2023.