_Eggs in the stool
_Hatch into rhabditiform larvae
_Rhabditiform larvae molt into filariform larvae
_Filariform larvae penetrate human skin
_The larvae penetrate into pulmonary alveoli
_The larvae ascend the bronchial tree to the epiglottis
_The larvae are swallowed.
_The larvae develop into adults in the small intestine (2 wks to mature).
_Occassionally rhabditiform larvae convert within the intestine to filariform larvae which re-enter the bowel wall and rejoin the cycle to the lungs. This is known internal auto-infection.
_Other times filariform larvae are passed in stool and re-enter through the skin of the buttocks and thighs. This is known as external auto-infection.
Over 2 years: (children and adults): _Tabs/susp Albendazole 400mg BD x 7/7
_ Ivermectin 200 mcg/kg OD x 2/7