Textbook

Introduction

1. Anatomy

2. Microbiology

2.1 General bacteriology

2.2 Introduction to systemic bacteriology

2.3 Gram positive cocci

2.4 Gram negative cocci

2.5 Gram positive bacilli

2.6 Gram negative bacilli

2.7 Other important bacteria

2.8 Virology

2.9 Parasitology

2.9.1 Entamoeba histolytica

2.9.2 Acanthamoeba

2.9.3 Naegleria fowleri

2.9.4 Giardia lamblia

2.9.5 Cryptosporidium parvum

2.9.6 Trichomonas

2.9.7 Plasmodium spp.

2.9.8 Babesia

2.9.9 Toxoplasma gondii

2.9.10 Taenia

2.9.11 Hymenolepis nana

2.9.12 Enterobius vermicularis

2.9.18 Additional information

2.10 Mycology

3. Physiology

4. Pathology

5. Pharmacology

6. Immunology

7. Biochemistry

8. Cell and molecular biology

9. Biostatistics and epidemiology

10. Genetics

11. Behavioral science

Wrapping up

2.9.11 Hymenolepis nana

Achievable USMLE/1

2. Microbiology

2.9. Parasitology

Hymenolepis nana

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Hymenolepis nana

Hymenolepis nana is the dwarf tapeworm. Humans become infected by ingesting eggs, most often through:

Food or water contaminated with eggs
Contaminated hands (fecal-oral transmission)
Ingestion of arthropods (e.g., insects, fleas) that contain cysticercoid larvae

Internal autoinfection can also occur, which can lead to a persistent infection.

Disease may be asymptomatic or may present with diarrhea, abdominal discomfort, and abdominal pain.

Diagnosis is made by demonstrating eggs in stool samples.

Hymenolepis nana

Hymenolepis nana is the dwarf tapeworm. Humans become infected by ingesting eggs, most often through:

Food or water contaminated with eggs
Contaminated hands (fecal-oral transmission)
Ingestion of arthropods (e.g., insects, fleas) that contain cysticercoid larvae

Internal autoinfection can also occur, which can lead to a persistent infection.

Disease may be asymptomatic or may present with diarrhea, abdominal discomfort, and abdominal pain.

Diagnosis is made by demonstrating eggs in stool samples.

Key points

Hymenolepis nana (dwarf tapeworm)

Infection via ingestion of eggs (contaminated food, water, hands)
Possible transmission by ingesting arthropods with cysticercoid larvae
Internal autoinfection can cause persistent infection

Clinical features

Often asymptomatic
Possible symptoms: diarrhea, abdominal discomfort, abdominal pain

Diagnosis

Identification of eggs in stool samples

Achievable USMLE/1

2. Microbiology

2.9. Parasitology

Hymenolepis nana

1 min read

Font

Discuss

Feedback

Hymenolepis nana

Hymenolepis nana is the dwarf tapeworm. Humans become infected by ingesting eggs, most often through:

Food or water contaminated with eggs
Contaminated hands (fecal-oral transmission)
Ingestion of arthropods (e.g., insects, fleas) that contain cysticercoid larvae

Internal autoinfection can also occur, which can lead to a persistent infection.

Disease may be asymptomatic or may present with diarrhea, abdominal discomfort, and abdominal pain.

Diagnosis is made by demonstrating eggs in stool samples.

Hymenolepis nana

Hymenolepis nana is the dwarf tapeworm. Humans become infected by ingesting eggs, most often through:

Food or water contaminated with eggs
Contaminated hands (fecal-oral transmission)
Ingestion of arthropods (e.g., insects, fleas) that contain cysticercoid larvae

Internal autoinfection can also occur, which can lead to a persistent infection.

Disease may be asymptomatic or may present with diarrhea, abdominal discomfort, and abdominal pain.

Diagnosis is made by demonstrating eggs in stool samples.

Key points

Hymenolepis nana (dwarf tapeworm)

Infection via ingestion of eggs (contaminated food, water, hands)
Possible transmission by ingesting arthropods with cysticercoid larvae
Internal autoinfection can cause persistent infection

Clinical features

Often asymptomatic
Possible symptoms: diarrhea, abdominal discomfort, abdominal pain

Diagnosis

Identification of eggs in stool samples