Originally Posted by Taximom5
Is there solid evidence that the strain found in Israel is not circulating vaccine-derived poliovirus?
Also, I am very concerned by this: http://www.who.int/features/qa/64/en/
"Circulating VDPVs in the past have been rapidly stopped with 2–3 rounds of high-quality immunization campaigns. The solution is the same for all polio outbreaks: immunize every child several times with the oral vaccine to stop polio transmission, regardless of the origin of the virus."
We know that use of the oral vaccine was stopped in the US because it CAUSED a small number of paralytic polio cases. That was with one or two doses, not several.
Yes, several articles have said that they've done genetic mapping and matched it to a wild strain that is prevalent in Pakistan.
Also according to article, Israel stopped using oral polio in 2005 for the same reason, so young children there have only had IPV with dead virus. IPV protects against polio paralysis, but it does not provide as much protection against carrying the polio virus as oral polio does. Kids who have been vaccinated with IPV may still carry polio in their guts and transmit it, which is why oral polio is a better choice in areas where there is a real risk of polio. It's possible that there could be paralysis from the current oral vaccination campaign, but I would really hope that the IPV which protects from paralysis with wild virus would do so too with the oral vaccine virus and so prevent that from happening.
The real risk of oral polio is when it is used in a population with low vaccination rates allowing it to circulate for a long time and potentially mutate.
Originally Posted by emmy526
i'm thinking, since the chicken pox vaccine virus can be found in the throats of vaccinees, the person who is taking the immunosuppressing drug, like prednisone, could potentially become infected, should the vaccinee cough or sneeze in the immuno person's face, and then that person ingested those droplets.....if the person who was just sneezed on, already had chicken pox, wouldn't it present as shingles? Or, if the person on the prednisone, came into contact with a child who had wild pox, and that person on pred had chicken pox already, again, wouldn't it present as shingles?
Shingles is when the virus in your own body erupts along a nerve line from where has been hiding in the nerve end since you had chickenpox. It involves pain along the nerve and a localized rash in that area. Chickenpox virus from a sneeze to the face isn't going to find it's way directly to the nerve end to erupt along a nerve like shingles. What can happen though if your immune system isn't able to fight off the virus sneezed in your face is a second case of chickenpox.
If the illness comes from old virus hiding in a nerve end, that's shingles. If you get it from someone else, that's going to be chickenpox, whether or not you've had them before.