Microbiology 4 (parasitology) Flashcards
modified acid fast positive (3)
cryptosporidium
cyclospora
isospora
T. solium proglottid
<13 lateral branches
T. saginatum
> 13 lateral branches
Entamoeba _____ has ingested RBCs
E. histolytica
E. histolytica and E. hartmanii can be distinguished by:
E. hartmanii is smaller
E. histolytica ingests RBCs
Entamoeba coli identifying features
eccentric karyosome
up to 8 nuclei in cyst
no RBCs inside
Amoeba with iodine-staining vacuole
Iodamoeba butschlii
Amoebas with “ball+socket” karyosome
Endolimax nana
Iodamoeba butschlii
“napkin ring” lesion mimicking colon CA
E. histolytica
how can Naeglaria flowleri be cultured
on a lawn of inactivated E. coli
it forms a visible train
non-pathogenic organism that looks like Giardia
Chilomastix mesnili
flagellate that causes diarrhea dn is seen as coinfection with Enterobius in children
Dientamoeba fragilis
on ddx with leshmania by histology
toxoplasma and histoplasma
Leighmania has kinetoplast
culture medium for leishmania
Novy-MacNeal-Nicolle
vector for leishmania
sandfly
leshmania species that tesnds to disseminate
L. donovani
Leishmania species causing mucocutaneous dz
L. braziliensis
T.cruzi causes
Chagas (heart failure and achalasia)
vector of T.cruzi and inoculation site
Reduviid bug
Romana sign on eye
organism with cilia uniformly covering surface
Balantidium coli (trophozoite)
location of cryptosporidium parvum
adherent to SI enterocyte brush border
location of isopora belli
between SI enterocytes
location of microsporidium
intracellular in apical portion of enterocyte
clinical of cyclospora
fever with watery diarrhea
followed by anorexia/fatigue/weight loss
malaria with fever every 48hr
P. ovale, P. vivax, P. falciparum
malaria with fever every 72hr
P. malariae
Plasmodium assd with nephrotic syndrome
P. malariae
Plasmodium assd with CNS dz
P. falciparum
Plasmodium with true relapse
P. vivax
P. ovale
P. vivax and ovale infect (younger/older) cells
younger (appear enlarged)
true malaria relapse due to
harboring latent sporozoites (hypnozoites) in liver
HbSA protective against
P. falciparum
Duffy negative protective against
P. vivax
G6PD def protective against
all plasmodia
features of P falciparum
only ring forms and gametocytes (bananas)
multiple ring forms
applique forms
RBCs not enlarged
plasmodium with schuffner dots
vivax and ovale
babesia vector
Ixodes tick
frequent coinfection with babesia
flavivirus
lyme dz
infection assd with plasma cell pneumonitis
pneumocystis jirovecii
infection assd with rectal prolapse in children
Trichuris trichiura
egg of trichuris trichiura looks like
barrel with corks at both ends
egg with rough, mamillated surface
Ascaris lumbricoides
Loeffler syndrome assd with
Ascaris lumbricoides
Strongyloides
2 hookworms
Necatur americanus
Ancylostoma duodenale
How to tell N. americanus and A. duodenale from strongyloides
longer buccal cavity
indistinct genital primordium
microfilaria found in blood
Wucheria bancrofti
Brugia malayi
Loa loa
differentiation W. bancrofti from B. malayi, and Loa loa
all have sheath
W. bancrofti has no tail nuclei
B. malayi has 2 tail nuclei
Loa loa has continuous row of tail nuclei
microfilaria not found in blood
Mansonella perstans
Onchocerca volvulus
Onchocerca volvulus causes
dermatitis, keratitis, corneal opacities
Bile duct infectiosn
Fasciola hepatica and Fasciolopsis buski (very large eggs)
Clonorchis sinensis
Paragonimus wertemanii
shellfish
pulmonitis
Katayana fever
febrile illness caused by schistosoma egg laying
Assd with SCC of bladder
S. hematobium (distal spine)
morphology of egg of Taenia saginata or T. solium
radially striated wall, 3 pairs of hooks
proglottid that is wider than long, with almond shaped scolex
Diphyllobothrium latum
most common cestode recovered in US
Hymenolepsis nana
strongyloides hyperinfection ass with what other infection
Lepromatous leprosy
Capable of person to person spread
Enterobius vermicularis
Hymenolepsis nana
