ideo-. a combining form representing idea, in compound words: ideology. Origin of ideo-. ide(a) + -o-.
Smallpox. Smallpox is a disfiguring and potentially deadly infectious disease caused by the Variola major virus. Before smallpox was eradicated, there were two forms of the disease worldwide: Variola major, the deadly disease, and Variola minor, a much milder form.According to some health experts, over the centuries smallpox was responsible for more deaths than all other infectious diseases combined.efore smallpox was eradicated, there were two forms of the disease worldwide: Variola major, the deadly disease, and Variola minor, a much milder form.
INFECTIOUS AGENT. Malaria in humans is caused by protozoan parasites of the genus Plasmodium: Plasmodium falciparum, P. vivax, P. ovale, or P. malariae. In addition, P. knowlesi, a parasite of Old World (Eastern Hemisphere) monkeys, has been documented as a cause of human infections and some deaths in Southeast Asia.NFECTIOUS AGENT. Malaria in humans is caused by protozoan parasites of the genus Plasmodium: Plasmodium falciparum, P. vivax, P. ovale, or P. malariae. In addition, P. knowlesi, a parasite of Old World (Eastern Hemisphere) monkeys, has been documented as a cause of human infections and some deaths in Southeast Asia.