FILE PHOTO: A boy covers his face from smoke as a health worker fumigates against mosquitoes in a residential area, as Sri Lanka tries to curb dengue fever across the island in Colombo, Sri Lanka July 12, 2023. REUTERS/Dinuka Liyanawatte/File Photo
FILE PHOTO: A boy covers his face from smoke as a health worker fumigates against mosquitoes in a residential area, as Sri Lanka tries to curb dengue fever across the island in Colombo, Sri Lanka July 12, 2023. REUTERS/Dinuka Liyanawatte/File Photo