[link to www.ncbi.nlm.nih.gov (secure)]
"Mortality and Morbidity Among Military Personnel and Civilians During the 1930s and World War II From Transmission of Hepatitis During Yellow Fever Vaccination: Systematic Review"

Personal Note:
My grandmother's ring just arrived on Monday from Pennsylvania. She died in 1938. Her death certificate cause of death is complication from chronic hepatitis. She had 3 babies that died in infancy, yellow fever. She was 25. My mom and her sister were adopted by a neighboring dairy farm.

Tragic but here I am, to live to tell about it.