Mpox Smallpox
Virus Mpox virus Variola virus
Strains and Genotypes 2 clades 4 types of variola major smallpox
Reservoirs Monkeys, rodents, etc. Humans
Incubation period 6~13 days, may be up to 21 days 7~19 days
symptoms Fever, rash in the mouth or on the face primarily Fever, small red spots on the tongue, rash on the face, arms, and legs
Fever 1~5 days 2~4 days
Lymphadenopathy Yes No
How long illness lasts 2~4 weeks Up to 5 weeks
Mortality 1~10% of cases Up to 30% of cases
Vaccine Smallpox vaccine Smallpox vaccine