Seven-year-old Carlos Kamara needs urgent surgery on a collapsed lung after he swallowed a toy whistle. Instead, all he can do is lie in pain in a half-empty hospital ward waiting to be seen.

A doctors¡¯ strike in Sierra Leone has paralyzed an already threadbare health system in one of the world¡¯s poorest countries, leaving its biggest and busiest hospitals in disarray, the sick unattended.

It represents a new low in Sierra Leone, whose ranks of medical staff were hit by the Ebola outbreak of 2013-16 that killed 250 medical workers out of nearly 4,000 in total.