Your child repeatedly suffering from worm infestation. You should avoid child to play with dirt and mud, Hand washing should be strictly followed. Deworming should be done ragularly once in 6 months. If worm load is high repeat deworming after one week also. And Albendazole
with ivermectin combination is better choice.And you should watch for vomitings, abdominal distention,severe abdominal pain
. So consult your Pediatrician
for medication advise.