Ascaris are Intestinal worms that affect human and cause diseases

1. ASCARIS
LUMBRICOIDE
Origin and Geographical distribution
-Found in small interstine of infected individuals
-seen worldwide,but more seen commonly in asian and african nations
-worm is oviporous and both adult and ova can be seen

2. Characteristic
Adult
-Length 20-35cm(female)
-cylindrical in shape
-length 15-20cm(male)
-Posterior of male is curved

3. Ova
-Fertilized
.75 to 50 ųm
Ovoid in shape
Contain single cell
-unfertilized
Are larger 90ųm×55ųm
Ovoid in shape
Egg shell is thinner

4. Mode of transmission
-Ingestion of infective
-Drinking water
-ingestion of contaminated vegetables

5. Life Cycle
-Infective Ova are ingested by the hand carying the ova from
soil contaminated with vegetables e.t.c
Ova reach the stomach where come out of egg shell
larva penetrate the stomach wall & enter lymphtic&venules
Through venules &blood circulation it reach the lungs
-in lung larva mature further penetrate alveolar
-It ascend the throat and are swallowed
upon reaching small intersine it develop into adult
-Life cycle continue

6. __
• Disease cause
• may cause stunted
growth
• Abdominal pain
• Interstinal obstruction
• Prevent and Control
• Proper facial disposal
• Personal hygine
• Build & use of latrine
• Treat infected individual

7. Laboratory diagnosis
Procedure
-Collect stool specimen
-Fix specimen in 10% formalin
-Concentrate using sedimentation technique
-Examine a wet amount of the segment