Suggest Treatment For Stomach Worm In An Infant

Somebody of mine has an infant of 7 month old,he is having severe worm infestation,first i also didnt believe it,but i was shocked when His pamper was full of worms,I dnt knw hw to treat it,hw to proceed as I think tht albendazole or mebendazole r indicated in children more than 1 yr,?plz guide me,I will be very thankful,!