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.
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.