It appears that you are still infected with helminths despite pharmacotherapy. Therefore, your first step is to re-evaluate your living situation and determine if you are re-infecting yourself. The most common mode of transmission for helminths is fecal-oral so the fecal waste in your area must be disposed of properly. Proper hand-hygiene is also necessary to prevent ingesting contaminated materials.
In addition, drugs such as Vermox (mebendazole) should be taken properly. For pinworm infections, the pill must be chewed and then swallowed with a repeat dose in two weeks to kill any remaining larvae. For whipworm, hookworm, or roundworm infections, you must chew one pill for 5 days and then repeat the drug course in 3-4 weeks to kill any remaining larvae.
Lastly, if these methods fail to control your worm infection, you should be evaluated for immunodeficiency.
