Human Parasitology
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Human Parasitology
INTRODUCTION 1. Definition of parasitology 2. Biological characteristics of parasite 3. Relationships between parasite and host 4. Epidemiology of parasitic disease 5. Prevention of parasitic disease End
1. Definition of Parasitology Parasitology: The study of parasite and parasitic diseases.
2. Biological Characteristics of Parasite 2.1 Parasite The word come from a Greek word meaning a man who like to eat at another’s table. The members of animal kingdom that can cause diseases in man.(no vertibrae) next
2.2 Classification of Parasites Protozoa Parasite
Helminth
Nematoda Trematoda Cestoidea
Medical Arthropods
2.3 Life cycle Definition: The process of a parasite’s development and the environmental conditions for the parasite to finish the process.
Host
Life cycle of lung fluke egg
larva 1
larva 2
river adult
adolescent
man, cat,dog
larva 3 snail
larva 5
larva 4
crab
river
3. Relationship between parasite and host 3.1 Effects of parasite on host 3.2 Effects of host on parasite
Back
4. Epidemiology 4.1 Distribution 4.2 Three conditions 4.3 Two influence factors
back
5. Prevention of parasitic disease Eradication of sources of infection Breaking the modes of infection Protection of easily infected population
back
4.1 Distribution High infection rate Wide endemic area More popular in tropic and sub-tropic area More popular in underdeveloped countries back
4.2 Three conditions Sources of infection Modes of infection Easily infected masses
back
4.3 Two influence factors Social factors Natural factors
back
The End Thanks!
Protozoa Those of parasites that are unicellular animals. Helminth Those of parasites that are multicellular animals and having no skeletons.
Back
Medical Arthropods: Those of parasites that are multicellular animals and having no skeletons.
Back
Nematoda
Cylindrical in shape, sexes separate, complete digestive tract, non-segmented Back
Trematoda Leaf-like non-segmented hermaphroditic incomplete digestive tract
Back
Cestoidea Ribbon-like Segmented No digestive tract Hermaphroditic
Comparison
Back
Infective stage Definition The stage of parasite development in which a parasite gets into human body and cause infection.
back
2.4 Host Definition: The members of animal kingdom that harbor a parasite.
Back
Host Intermediate host Those of host in which a parasite pass its larva stages. Definitive host Those of host in which a parasite pass its adult stage. Back
Host Reservoir host: meaning the animal which can harbor a human parasite.
Back
3.1 Effects of parasite on host Depriving the host of nutrients Mechanical effect Toxic effect Allergic reaction Secondary infection Others Back
3.2 Effects of host on parasite Immunity Special immunity Non- Special immunity Influence factors Genetic factors Nutritional status Back
INTRODUCTION 1. Definition of parasitology 2. Biological characteristics of parasite 3. Relationships between parasite and host 4. Epidemiology of parasitic disease 5. Prevention of parasitic disease End
1. Definition of Parasitology Parasitology: The study of parasite and parasitic diseases.
2. Biological Characteristics of Parasite 2.1 Parasite The word come from a Greek word meaning a man who like to eat at another’s table. The members of animal kingdom that can cause diseases in man.(no vertibrae) next
2.2 Classification of Parasites Protozoa Parasite
Helminth
Nematoda Trematoda Cestoidea
Medical Arthropods
2.3 Life cycle Definition: The process of a parasite’s development and the environmental conditions for the parasite to finish the process.
Host
Life cycle of lung fluke egg
larva 1
larva 2
river adult
adolescent
man, cat,dog
larva 3 snail
larva 5
larva 4
crab
river
3. Relationship between parasite and host 3.1 Effects of parasite on host 3.2 Effects of host on parasite
Back
4. Epidemiology 4.1 Distribution 4.2 Three conditions 4.3 Two influence factors
back
5. Prevention of parasitic disease Eradication of sources of infection Breaking the modes of infection Protection of easily infected population
back
4.1 Distribution High infection rate Wide endemic area More popular in tropic and sub-tropic area More popular in underdeveloped countries back
4.2 Three conditions Sources of infection Modes of infection Easily infected masses
back
4.3 Two influence factors Social factors Natural factors
back
The End Thanks!
Protozoa Those of parasites that are unicellular animals. Helminth Those of parasites that are multicellular animals and having no skeletons.
Back
Medical Arthropods: Those of parasites that are multicellular animals and having no skeletons.
Back
Nematoda
Cylindrical in shape, sexes separate, complete digestive tract, non-segmented Back
Trematoda Leaf-like non-segmented hermaphroditic incomplete digestive tract
Back
Cestoidea Ribbon-like Segmented No digestive tract Hermaphroditic
Comparison
Back
Infective stage Definition The stage of parasite development in which a parasite gets into human body and cause infection.
back
2.4 Host Definition: The members of animal kingdom that harbor a parasite.
Back
Host Intermediate host Those of host in which a parasite pass its larva stages. Definitive host Those of host in which a parasite pass its adult stage. Back
Host Reservoir host: meaning the animal which can harbor a human parasite.
Back
3.1 Effects of parasite on host Depriving the host of nutrients Mechanical effect Toxic effect Allergic reaction Secondary infection Others Back
3.2 Effects of host on parasite Immunity Special immunity Non- Special immunity Influence factors Genetic factors Nutritional status Back
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