The Canadian Arctic - Especially Nunavut. There are several islands in the region which are larger than some states in the United States. One of them (Devon Island) at 21k square miles, is the largest uninhabited island in the world. The Guiana Highlands/Shield (South America) - Some the most remote and mountainous rain forest on Earth.
Oral polio vaccine (OPV). The oral polio vaccine (OPV) was developed in 1961 by Albert Sabin. Also called âtrivalent oral polio vaccineâ or âSabin vaccineâ, OPV consists of a mixture of live, attenuated (weakened) poliovirus strains of all three poliovirus types.The oral polio vaccine is simple to administer. A few drops, given multiple times, can protect a child for life.ral polio vaccine (OPV). The oral polio vaccine (OPV) was developed in 1961 by Albert Sabin. Also called âtrivalent oral polio vaccineâ or âSabin vaccineâ, OPV consists of a mixture of live, attenuated (weakened) poliovirus strains of all three poliovirus types.
Polio: Causes, Symptoms, and Vaccines. Polio, also known as poliomyelitis and infantile paralysis, is a highly contagious viral infection that can lead to paralysis, breathing problems, or even death. Polio can be classified as either symptomatic or asymptomatic (with or without symptoms). About 95 percent of all cases are asymptomatic, and 4-8 percent of cases are symptomatic. In this article, we will look at the causes, symptoms, diagnosis and future eradication of polio. Contents of this article: Types of polio.