A health worker sprays insecticide to kill the Aedes aegypti mosquitos to help mitigate a dengue outbreak at a public school in Brasilia, Brazil February 16, 2024.
A health worker sprays insecticide to kill the Aedes aegypti mosquitos to help mitigate a dengue outbreak at a public school, in Brasilia, Brazil, on February 16, 2024. REUTERS/Ueslei Marcelino