KARACHI, Pakistan

Nestled on the northern outskirts of Pakistan’s most populous city of Karachi is a dusty, sprawling locality with limited access to healthcare and basic sanitation which is home to nearly 250,000 Afghan refugees who were forced from their country by a lingering conflict.

Piles of garbage, sewage gushing from choked gutters and unclean water, which often causes diarrhea and other waterborne diseases in children, have turned it into a distressingly impoverished neighborhood even by Karachi’s standards.

It is commonly known as an Afghan basti (town), where extended families jam into small mud and concrete houses and even in

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