katelizgrant's version from 2015-11-18 02:42


Question Answer
Giardia lambliano mitochondria, ATP production is anaerobic, no ER or golgi bodies, forms trophozoite (vegetative) and cyst forms, transmitted by contact with contaminated feces, reproduction is asexual, binary fission. Infection: small intestine of human and other animals. 10% of population in developing countries, 19,888 cases in US, 1.2 million cases occur annually, 5.5% of Americans are infected, can kill AIDS patients
Trichomonas vaginaliswet toilet seats, must be transferred from host to host quickly, sexual contact, causes infections of the vagina, male urinary tract. 3-6 million cases in women in the US per year.
Trypanosomatransmission: tsetse fly, cause infections of the circulatory system which leads to destruction of the nervous system ---> "sleeping sickness" 100% fatal if untreated, 1,000,000 people are infected.
Trypanosoma cruziChaga's disase, milder than the African forms, but can still be lethal. Transmitted by reduviid or kissing bug, also known as the assassin bug because it bites the face and lips. 15-20 million people in Central and South America are infected each year, 50,000 deaths. Leading cause of heart disease in these areas. 5%-10% result in death. Symptoms: fever, organ damage to heart, stomach, and intestines. Cardiomyopathy, megacolon, megaesophagus
Leishmania sp.Three species all transmitted by female sand flies, skin diseases with lesions, systemic disease with fever. Mortality in untreated cases is 70%-95%. 30% of treated cases fail
Entamoeba histolyticacauses amebic dysentery, engulfs human red blood cells as primary food, transmitted from human to human by cysts in feces, infects 10% of the world's population, transmission: fecally contaminated water
Balantidium colionly parasitic ciliate of human beings, acquired through fecal contaminated drinking water, causes balantidial dysentery resembling amebiasis
Plasmodium sp.Causes malaria, 2010 = 216 million cases worldwide, 655,000 deaths -- 1,692 cases in the US, almost all were imported. Transmitted by the anopheles mosquito
Toxoplasma gondiicauses toxoplasmosis, life cycle involves domestic cats, transmission: trophozoites reproduce sexually & asexually in infected cats, 80% of cats are infected, 30% of humans - most asymptomatic, dangerous in pregnant women. 1 of every 500 women acquires acute infection, fetal involvement occurs in 17% of first trimester, and 65% of third trimester.
Cryptosporidiummay cause 30% of diarrheal illnesses in underdeveloped countries, lives in the cells of humans lining the intestines, can be transmitted through feces of dogs, cats, rodents, cows, hospital and water supply transmission have been reported, first reported to cause disease in humans in 1976
Pneumocystis jirovecipreviously undetermined as to its classification as a fungus or protozoan, appears to be fungus based on mRNA sequencing, causes a severe pneumonia in immunocomprimised individuals, AIDS patients are very susceptible to infection

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