Children ages 6 to 14 years represent 23% of the cases.
Cholera deaths also declined, but a new outbreak in Angola is showing signs of escalation, the WHO said.
Researchers say the strain, which is resistant to 2 of the 3 antibiotics recommended for treating cholera, appears to be spreading in East Africa.
Countries reporting the latest outbreaks are Iraq, Lebanon, and South Sudan.
Along with the effects from flooding, the outbreak area is seeing an influx of people fleeing conflict in neighboring Sudan.
Global cholera deaths in 2024 are up 126% compared with 2023.
The analysis also found high levels of community deaths in some countries, which highlights serious gaps in treatment.
A shortage of oral cholera vaccine still complicates response efforts, with demand nearly double the number of doses produced since 2023.
Compared to last year, cholera cases are down 32%, but deaths are up 14%.
Two facilities in South Korea are expected to begin producing the vaccine in the second quarter of the year, which is expected to help ease severe vaccine shortages.
