PARASIT

PARASITE

OVA

LARVA

ADULT

TRICHENELLA SPIRALIS 

CAPILLARIA PHILIPPINENSIS

TRICHURIS TRICHIURA 

ASCARIS LUMBRICOIDES

HOOKWORMS

ENTEROBIUS VERMICULARIS

PARASITE

COMMON NAME

INFECTIVE STAGE

DIAGNOSTIC STAGE

DISEASE 

TRICHENELLA SPIRALIS

TRICHINA WORM 

ENCYSTED LARVAE 

ENCYSTED LARVAE

TRICHINOSIS, TRICHINIASIS, TRICHINELLOSIS

CAPILLARIA PHILIPPINENSIS

PUDOC WORM

INFECTIVE LARVAE

FERTILIZED OVA

• CAPILLARIASIS OR MYSTERY DISEASE 

• MALABSORPTION SYNDROME 

• FLATTENING OF THE VILLI (CAUSES VILLI ATROPHY) 

TRICHURIS TRICHIURA 

WHIPWORM 

EMBRYONATED OVA 

UNEMBRYONATED EGGS

• TRICHURIASIS

• TRICHUCEPHALIASIS 

• WHIPWORM INFECTION 

ASCARIS LUMBRICOIDES

GIANT INTESTINAL ROUNDWORM

EMBRYONATED OVA

FERTILIZED EGG AND UNFERTILIZED EGG

ASCARIASIS, DOORYARD OR BACKYARD INFECTION

HOOKWORMS

HUMAN HOOKWORMS:

1. NECATOR AMERICANUS: AMERICAN HOOKWORM/AMERICAN MURDERER/NEW WORLD HOOKWORM

2. ANCYLOSTOMA DUODENALE: OLD WORLD HOOKWORM

3. ANCYLOSTOMA CEYLANICUM

ANIMAL HOOKWORMS: (CAUSE SKIN LESIONS OR LARVAL MIGRANS IN MAN)

1. ANCYLOSTOMA BRAZILIENSE (CAT HOOKWORM)

2. ANCYLOSTOMA CANINUM (DOG HOOKWORM)

FILARIFORM

OVA 

NECATORIASIS/UNCINARIASIS: NECATOR AMERICANUS

ANCYLOSTOMIASIS: ANCYLOSTOMA SPECIES

ENTEROBIUS VERMICULARIS

PIN WORM, SEAT WORM

EMBRYONATED EGG

OVA (EGGS ON PERIANAL FOLDS) 

ENTEROBIASIS, OXYURIASIS