| 31. | In Nigeria the wild poliovirus WPV is mainly prevalent in the north of the country.
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| 32. | Switch to a bivalent oral eradication of poliovirus type 2 was certified in September 2015.
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| 33. | Poliovirus is transmitted through the oral-fecal route and does not always cause symptoms.
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| 34. | A small amount of poliovirus infections cause paralysis when the virus infects the nervous system.
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| 35. | Poliovirus, as well as coxsackie and echovirus are spread through the fecal-oral route.
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| 36. | HIV and poliovirus are such viruses.
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| 37. | Low resolution structures of CD155 complexed with poliovirus have been obtained using x-ray crystallography.
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| 38. | CSF testing to date has been negative for West Nile virus and enteroviruses, including poliovirus.
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| 39. | One dose of OPV produces immunity to all three poliovirus serotypes in approximately 50 % of recipients.
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| 40. | This is important because countries with high incidence of polio are now using live oral poliovirus vaccine.
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