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Polio a. An acute viral disease, usually affecting children and young adults, caused by any three polioviruses, characterized by inflammation of the motor neurons of the brain stem and spinal cord, and resulting in a motor paralysis, followed by muscular atrophy and often permanent deformities.
Polio b. An acute bacterial disease, usually affecting children and young adults, caused by any three poliobacteria, characterized by inflammation of the motor neurons of the brain stem and spinal cord, and resulting in a motor paralysis, followed by muscular atrophy and often permanent deformities.
Polio c. An chronic viral disease, usually affecting children and young adults, caused by any three polioviruses, characterized by inflammation of the motor neurons of the brain stem and spinal cord, and resulting in a motor paralysis, followed by muscular atrophy and often permanent deformities.
Epidemic a. Belonging exclusively or confined to a particular place. b. Prevalent throughout an entire country, continent or the whole world. c. Extremely prevalent, widespread
AIDS a. A disease of the immune system characterized by increased susceptibility to opportunistic infections, which caused by a retrovirus and transmitted chiefly through blood or blood products that enter the body’s bloodstream, especially by sexual contact or contaminate hypodermic needles. b. A disease of the immune system characterized by increased susceptibility to opportunistic infections, which caused by bacteria and transmitted chiefly through blood or blood products that enter the body’s bloodstream, especially by sexual contact or contaminate hypodermic needles
AIDS c. A disease of the immune system characterized by increased susceptibility to opportunistic infections, which caused by a retrovirus and transmitted chiefly through blood or blood products that enter the body’s bloodstream, especially by sneezing and mosquito bites.
Virus a. A disorder or incorrectly functioning organ, part, structure, or system of the body resulting from the effect of genetic or developmental errors, infection, poisons, nutritional deficiency or imbalance, toxicity, or unfavorable environmental factors; illness; sickness; ailment.
Virus b. An ultramicroscopic infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of an RNA or DNA core, a protein coat, and in more complex types, a surrounding envelope. c. Ubiquitous one-celled organisms, spherical, spiral, or rod-shaped and appearing singly or in chains.
Extinct a. Not abundant b. No longer in existence; that has ended or died out c. Coming or occurring far apart in time; uncommon; unusual