North & Central America

This archive covers progress stories from North and Central America, spanning the U.S., Canada, Mexico, and the nations of Central America. Readers will find reporting on health, environment, community resilience, and policy advances across the region.

Newborn baby being held, for article on spina bifida treatment

World-first stem cell therapy trial treats spina bifida before birth

Spina bifida causes nerve damage that accumulates in the womb, and until now, medicine could only respond after that damage was done. A clinical trial at UC Davis Health is changing that window, applying a stem cell patch directly to a fetus’s spine during pregnancy to support repair before birth. The first baby treated was expected to arrive with leg paralysis — instead, she was kicking and wiggling her toes. If results hold across all 35 enrolled patients, this could establish a genuinely new standard of care for a condition that currently offers families very little hope.