This is a very sensitive issue of a child's life. If parents deal with it properly, cautiously and timely, their child's life could be saved from a lot of present and future complications.
I would like to suggest that if a parent tells his/her child about writer's suggested ways to deal with this problem in form of a story of a child who faced this issue and got rid of it by following his/her parent's advice (which are, definitely, based on writer's provided guidelines), then it will be more effective.
Congrats Zulma Devi for addressing this complicated issue in such a simple way.
Thanks for visiting my blog .. you know what to do, regards @mobi72