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perfect design thanks http://corrsafe.com.au/stmap_91de0.html?dapsone.methoxsalen.viagra costco pharmacy in lakewood Third, the situation illustrates the critical role the two different polio vaccines play in rooting out the disease. Most countries at risk for polio use the oral polio vaccine (OPV), which is cheap, effective and easy to administer. OPV creates intestinal immunity that helps stop person-to-person transmission of the virus. The drawback, however, is that OPV uses a weakened but live virus and, on very rare occasions, that virus can mutate and cause paralysis.
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