Our Smallpox Main Article provides a comprehensive look at the who, what, when and how of Smallpox

Medical Definition of Vaccinia

Vaccinia: 1. The cowpox virus which is used to vaccinate against smallpox. 2. A cutaneous or systemic reaction to vaccination with the smallpox vaccine as, for example, in congenital vaccinia and progressive vaccinia.


Last Editorial Review: 9/14/2016

Search MedTerms:



Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.

Health Solutions From Our Sponsors