5 doctors weighed in:
How many forms of smallpox exist?
5 doctors weighed in

Dr. Eric Farbman
Neurology
2 doctors agree
In brief: Two forms of smallpo
Historically there have been two forms of the disease.
Variola major was the main form of the disease that caused all sorts of medical problems. Variola minor was much less common, much less severe, and only about 1% of all smallpox infections. There hasn't been a smallpox infection in the world since 1978, so you are unlikely to see either of these viruses.

In brief: Two forms of smallpo
Historically there have been two forms of the disease.
Variola major was the main form of the disease that caused all sorts of medical problems. Variola minor was much less common, much less severe, and only about 1% of all smallpox infections. There hasn't been a smallpox infection in the world since 1978, so you are unlikely to see either of these viruses.
Dr. Eric Farbman
Dr. Eric Farbman
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Dr. James Ferguson
Pediatrics
2 doctors agree
In brief: One basic disease
As an eradicated disease, no forms are now present in the wild.
Some stored virus is present in research as a hedge against any return. In its day, regular smallpox had two presentations that had higher death rates, including a malignant form and a hemorrhagic (blood breakdown form).

In brief: One basic disease
As an eradicated disease, no forms are now present in the wild.
Some stored virus is present in research as a hedge against any return. In its day, regular smallpox had two presentations that had higher death rates, including a malignant form and a hemorrhagic (blood breakdown form).
Dr. James Ferguson
Dr. James Ferguson
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Dr. Heidi Fowler
Psychiatry
In brief: Smallpox
There were 2 clinical types of smallpox.
Variola minor was less severe than Variola Major. Smallpox from Variola Minor had a death rate of 1% or less. 90% or > unvaccinated smallpox cases fell under the category of “ordinary Smallpox”. The overall fatality rate for Smallpox was 30%. Malignant (AKA flat) Smallpox made up 5 to 10% of cases, was usually fatal & mostly effected children. >>

In brief: Smallpox
There were 2 clinical types of smallpox.
Variola minor was less severe than Variola Major. Smallpox from Variola Minor had a death rate of 1% or less. 90% or > unvaccinated smallpox cases fell under the category of “ordinary Smallpox”. The overall fatality rate for Smallpox was 30%. Malignant (AKA flat) Smallpox made up 5 to 10% of cases, was usually fatal & mostly effected children. >>
Dr. Heidi Fowler
Dr. Heidi Fowler
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1 comment
Dr. Heidi Fowler
Hemorrhagic Smallpox which is usually fatal, made up 2% of cases & mostly effected adults. The WHO announced World-wide eradication of Smallpox on May 8 1980. Smallpox has no animal reservoirs. So Smallpox would not return naturally.
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