Protists

Single celled eukaryotic microbes

Protozoa

Most frequent cause of acute symptomatic parasite disease in the US and world

Giardia

Common ways to get giardia

• Stream water

• human and wildlife waste

Best diagnosis tool for giardia

Stool O&P, serial stool antigen test

Trichomonas causes symptoms in males or females?

Females (T. vaginalis)

Protozoa that demonstrate “twitching motility”

Trichomonas

Two Flagellate Protozoa

• Giardia

• Trichomonas

Three types of Sporozoa (spore forming)

• Toxoplasma

• Cryptosporidium

• Plasmodium

sporozoa that causes diarrhea in AIDS patients

Crypto. parvum

Does Crypto. parvum need an intermediate host?

NO

Infection you acquire even in chlorine swimming pools

Crypto parvum.

Symptom from C. parvum in immunocompromised individuals

watery diarrhea

Protozoa which sexually reproduces (definitive host) inside cats?

Toxoplasma gondii

Protozoa which can be congitally transferred? Why pregnant women can’t touch cat litter

Toxoplasma gondii

Intracellular protozoa

Toxoplasma gondii

Most deadly human parasitic disease?

Malaria from Plasmodium falciparum

Protozoa that multiply within liver cells

Plasmodium falciparum.

How to diagnose P. falciparum

RBC blood film. Multiplies in liver and then goes to attack RBCs

Drug for P. falciparum

Chloroquine (prophylactic)

Where can N. fowleri be found?

geothermic pools (warm fresh water)

Animal like protzoans

Amoeba

Two forms of amoeba

• Adult trophozoite

• Cyst (durable and infectious)