Why are roundworms dangerous for adults and children?

1) Roundworms are dangerous for adults and children in that they cause pain, cough, symptoms of poisoning due to toxins secreted by worms.
2) For young children, they are dangerous by blockage of the airways, since they go up the esophagus into the pharynx and can go down the windpipe.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.