Non-fiction writer for children/ young adults discusses her latest book "Fatal Fever: Tracking Down Typhoid Mary."
For many years Jarrow taught science, math and writing in elementary and middle schools.
Since 1985 she has written and published many non-fiction science and history books for young readers.
Her most recent is part of a trilogy of non-fiction books about terrifying and deadly diseases
called Fatal Fever: Tracking Down Typhoid Mary.