Pediatrician Jennifer Halverson will never forget her 36th birthday.
The St. Paul native was volunteering at a maternity clinic in Port-au-Prince, Haiti. She felt great — she went to her job that day and then out to dinner with friends.
But when she got home and went to sleep that night in May, something didn't feel right.
"Then I woke up at 3 in the morning," she says, "and what struck me the most was that my shoulders were on fire. It was like I was being stabbed in both shoulders."