In the heart of Aden’s Crater district, two young sisters — Nehal, just 11 months old, and Nuha, 3 years old, received their polio vaccines as part of Yemen’s nationwide campaign to protect every child. Their mother welcomed the health worker with quiet relief. In a world full of uncertainty, safeguarding her daughters felt like a promise fulfilled.

Across Yemen, families are opening their doors in a powerful act of hope. On the other side stands a health worker, ready to deliver two drops that could change a child’s life forever.

For the health worker – Nagwa Ali – who knocked on Nehal and Nuha’s door, each child she vaccinates is part of a larger story. “Every door we knock on brings Yemen closer to a day without polio,” she says.

Conflict, barriers to access and misinformation make it hard to reach every child but Yemen’s health workers, with the Ministry of Public Health and Population (MoPHP) and the World Health Organization (WHO) at their side,  are finding ways to overcome the challenges. They travel far, reassure worried parents, and persist through every challenge.