One day, in early 2018, Keyla, a 14-year-old pregnant girl, arrived at a hospital in Barcelona, in eastern Venezuela. She was all by herself, running a fever and leaking amniotic fluid. As soon as she was performed an ultrasound scan, the doctors knew that her baby had died. Dr. Nathali Arismendi, at the time an OB-GYN trainee, was amongst those who attended to her. Unknowingly, that young patient would teach her a lot.

Nathali Arismendi was still a medical student when, during one of her first shifts, she pricked her finger while suturing a head wound on a homeless woman. Weeks after that work-related accident, she developed a fever and her lymph nodes got swollen. An HIV test came back positive, but she had no doubt in her mind that she had been misdiagnosed.