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.
Dr Jonas Salk develops the first vaccine against polio â an injectable, inactivated (killed) polio vaccine (IPV). Dr Albert Sabin develops a live oral vaccine against polio (OPV), which rapidly becomes the vaccine of choice for most national immunization programmes in the world.r Jonas Salk develops the first vaccine against polio â an injectable, inactivated (killed) polio vaccine (IPV). Dr Albert Sabin develops a live oral vaccine against polio (OPV), which rapidly becomes the vaccine of choice for most national immunization programmes in the world.