Modes of Transmission (Parasitology)

Question 1

Contact Transmitted

infection is transmissible directly from person to person

Answer 1

Enterobius vermiculars
Trichomonas vaginalis
Sarcoptes scabei
Pediculus capitis

Question 2

Soil Transmitted

infective stage becomes infective after a period of incubation in the soil

Answer 2

Ascaris lumbricoides
Trichuris trichiura
Ancyclostoma duodenale
Necator americanus
Strngyloides stercorales

Question 3

Arthropod Transmitted

infective stage develops in the arthropod intermediate host which transmits the infection by biting or when ingested by man

Answer 3

Plasmodium spp
Wuchereria
Trypanosoma

Question 4

Snail Transmitted

infective stage develops in the snail intermediate host or second intermediate host after partial development in the snail

Answer 4

Schistosoma

Echinostoma

Question 5

Food/Animal Transmitted

infective stage develops in animals whose flesh is an important food item of man

Answer 5

Trichenella spiralis
Taenia solium
Capillaria philippinensis
Paragonimus westermani

Question 6

Water Transmitted

infective stage develops in the external environment and usually reaches man through ingestion of contaminated water

Answer 6

Giardia lamblia

Entamoeba histolytica

Question 7

Sexual intercourse

Answer 7

Trichomonas vaginalis

Question 8

Congenital transmission

Answer 8

Toxoplasma gondii