Population Demographics for Lebanon County, Pennsylvania in 2016 and 2017. Other Counties and Cities in Pennsylvania.
Hookworms can produce any of the following symptoms â though symptoms may only appear with heavy infections: 1  Failure to gain weight or weight loss. 2  Loss of appetite. 3  Diarrhea. Anemia (pale gums, weakness) sometimes seen and can be a cause of death in puppies.  Bloody or tarry stools may be present.
People are infected when animal hookworm larvae penetrate the skin, causing a local reaction that is red and itchy. Raised, red tracks appear in the skin where the larvae have been and these tracks may move in the skin day to day, following the larvaeâs movements.