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Originally Posted by http://www.medicalnewstoday.com/medicalnews.php?newsid=35184
Oral polio vaccine (OPV), one of the vaccines instrumental in driving the disease to near-eradication, contains weakened live virus strains. The vaccine is highly effective, easy to administer, relatively inexpensive, and has been used for more than 40 years. Those given the vaccine excrete, or "shed," virus in their stool. There is some concern over the use of OPV, however, because vaccine-derived poliovirus (VDPV) can occasionally cause another form of polio.
Originally Posted by http://www.909shot.com/Articles/gnspolio.htm
Since 1961, when OPV first became available, 316 people in the United States have contracted the paralytic form of the disease from the vaccine, the federal Centers for Disease Control and Prevention reports. Some of those cases include vaccinated children who contracted the disease. Others are ``contact'' polio cases -- usually other kids, relatives or caretakers who contracted it from children taking the oral vaccine dose, and then passing on the disease unintentionally by ``shedding'' the live virus through their feces or body fluids.
Originally Posted by harpyr
Does anybody know how long the vaccinated kids will be shedding the virus?
Originally Posted by http://www.ppsr.com/ppsquestions.html
How long is oral polio vaccine virus shed in the stool after the dose?
Up to 6 weeks. Viral shedding in the stool is generally longest following the first dose and is generally shorter with each
Originally Posted by Slabobbin
Wow, I didn't know they still did the live vax...is that what you are talking about or did I misunderstand?
|Data from subsequent studies have confirmed that 90%--100% of children develop protective antibodies to all three types of poliovirus after administration of two doses of the currently available IPV, and 99%--100% develop protective antibodies after three doses (53--55).|
|Results of studies showing long-term antibody persistence after three doses of enhanced-potency IPV are not yet available in the United States. However, data from one study indicated that antibody persisted throughout a 4-year follow-up period (56).|
|After complete primary vaccination with three doses of OPV, >95% of recipients develop long-lasting (probably lifelong) immunity to all three poliovirus types.|
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