'Eradicated worldwide by vaccination programs, this febrile disease is caused by the variola virus'
smallpox
SCIENCE: Eradicated worldwide by vaccination programs, this febrile disease is caused by the variola virus
Eradicated worldwide by vaccination programs, this febrile disease is caused by the variola virus
Eradicated worldwide by vaccination programs, this febrile disease is caused by the variola virus
"S"CIENCE
smallpox
"S"CIENCE