A highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars.

synonyms: smallpox, variola.

Dutch: kinderpokken, pok, pokken, pokziekte, variola
Polish: ospa prawdziwa, ospa krwotoczna, ospa, czarna ospa

A type of smallpox virus that has a fatality rate of up to 25 percent.

synonym: variola major virus.