This book is a series of scholarly works based on the known facts of the 1630s and the theoretical effects of the Ring of Fire presented as part of the book 1632 and subsequent books and stories placed in the 1632 fictional universe.
Those articles focus on medical care before and after the Ring of Fire. And how the introduction of modern medical knowledge would affect the medical practices of the seventeenth century. The articles include:
Herd Immunity by Vincent W. Coljee
Crude Penicillin: Potential and Limitations by Kim Mackey
A Night with Venus: STIs and Their Treatment in the 1630s, Part One by Gus Kritikos
Common Childhood Diseases in the 1630s, Part One: Fevers with Rashes by Gus Kritikos
The Progression of Trauma Care and Surgery after the Ring of Fire, Part 1 by Gus Kritikos
The Progression of Trauma Care and Surgery after the Ring of Fire, Part 2 by Gus Kritikos
The White Plague by Brad Banner
The New Royal Touch: Synthesis of Anti-TB Drugs by Iver P. Cooper
Together these articles make quite a good start on what you need to know to write a medically based story in the 1632 universe.