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Diseases and People Books in Order

Diseases and People is a 2-book series by Nancy Day for ages 13+, at a grades 8–10 reading level, with gentle to mild content (HootRated intensity 1–2 out of 5).

Books
2
By publication date
Reading level
Grades 8–10
Average grade level 9
Recommended ages
Ages 13+
From HootRated age ratings
Content intensity
Gentle to mild
HootRated 1–2 out of 5 · avg 1.5

Diseases and People Reading Order

Series numbers aren't available for most Diseases and People books, so they're listed by publication date (oldest first).

# Title Reading Level Ages Content
1 Malaria, West Nile, and other mosquito-borne diseases
2001
Level 9-10 16+ Mild
2 Sleep disorders
2003 · Gail B. Stewart
Level 8-9 13+ Gentle

Content Intensity Across the Series

Consistent

Content stays at a steady intensity level throughout the series.

1
2
First book Latest book

Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Diseases and People (2 books by Nancy Day) lands at a grades 8–10 reading level, with average content intensity 1.5/5. Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.

The reading-order table above lists every book with per-volume reading level, age and intensity ratings so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.

All Diseases and People Books

Malaria, West Nile, and other mosquito-borne diseases

Nancy Day

Cover of Malaria, West Nile, and other mosquito-borne diseases

Malaria, West Nile, and other mosquito-borne diseases

Nancy Day

Level 9-10

Sleep disorders

Gail B. Stewart

Cover of Sleep disorders

Sleep disorders

Gail B. Stewart

Level 8-9

Similar reading level, content intensity and themes.

Questions about the Diseases and People series

What reading level is the Diseases and People series?
Diseases and People books are at a grades 8–10 reading level (average grade level 9), and HootRated recommends the series for ages 13+. There are 2 books in the series.
What order should I read the Diseases and People books?
Series numbers aren't available for most Diseases and People books, so HootRated lists them by publication date: Malaria, West Nile, and other mosquito-borne diseases (2001); Sleep disorders (2003).
What age is the Diseases and People series appropriate for?
HootRated recommends Diseases and People for ages 13+. Content is gentle to mild (HootRated intensity 1–2 out of 5). Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.