Nigeria is marking World Autism Day with its biggest-ever screening drive. The nationwide initiative, "Spark a Spectrum of Possibilities 2026," offers free screenings and consultations aiming to improve early diagnosis and support for thousands of children. Adwoa Tenkoramaa Domena speaks to autism campaigner Maria Okafor, founder of the RBM Autism Foundation, and DW's Kunle Babs in Abuja.