Nigeria has begun the rollout of the MenFive vaccine in high-risk areas, securing millions of doses to protect children from all five strains of meningitis. The potentially fatal disease poses a grave threat to young children globally, with sub-Saharan Africa being particularly vulnerable to it.

Nigeria's government says the rise will only affect 1.5 million consumers, mostly manufacturers. But analysts believe the hike will lead to higher inflation and result in job losses and closures of businesses.

A decade on, the world has largely forgotten about the Chibok girls, who were kidnapped by Nigeria's Boko Haram Islamist militants. But for victims and their families, like Solomon Maina, who is still waiting for news about his daughter, the tragedy is ongoing.