> There is no vaccine for Guinea worm, because the parasite induces no immune response. So, eradicating it might lead to the loss of some knowledge, on how it

> There is no vaccine for Guinea worm, because the parasite induces no immune response. So, eradicating it might lead to the loss of some knowledge, on how it doesn't trigger some immune response. Specially because if you pull the worm, it retracts and causes infection, so the mechanism might not be that simple. Even more: few years ago (2013) [1], it was expected that soon it would have been eliminated, because dogs had their own species of guinea worm and wouldn't substitute human beings as the necessarily step in the worm life cycle. [1] http://phenomena.nationalgeographic.com/2013/01/24/the-guinea-worm http://phenomena.nationalgeographic.com/2013/01/24/the-guine...