Away from threat of Islamist violence or floods, health risks for pregnant women in Nigeria's refugee camps remain high https://cdn.cnn.com/cnnnext/dam/assets/231124134520-02-maternal-health-nigeria-super-169.jpg https://cdn.cnn.com/cnnnext/dam/assets/231124134522-03-maternal-health-nigeria-super-169.jpg https://cdn.cnn.com/cnnnext/dam/assets/231124134523-04-maternal-health-nigeria-super-169.jpg