True or False: Variola major ordinary type presents in over 90% of cases among unvaccinated individuals.

Variola major, the virus that causes smallpox, indeed presents as the ordinary type in over 90% of cases among unvaccinated individuals. This form of the disease is characterized by its distinct and severe symptoms, which include fever, body aches, and the signature rash that progresses through various stages. The statement reflects the epidemiological data regarding the prevalence of the ordinary type among those who have not been vaccinated. Given that smallpox vaccination was widespread before the disease was eradicated, the ordinary type of variola major primarily affects those without prior immunity. Therefore, the assertion about the prevalence of this type of variola major among unvaccinated individuals is accurate.