LONDON, Dec 11 (Reuters) - There were around 11 million more cases of malaria in 2023 than in 2022, up to an estimated 263 million, according to a new World Health Organization report, marking another year of negligible progress against the age-old killer.

There were 597,000 deaths, a similar total to 2022, the vast majority among African children aged under 5 years old, the WHO said.