Microbiology 2 Flashcards
Babesiosis (Babesia microti) vector:
Ixodes scapularis tick
Same for Lyme disease and HGA Human Granulocytic Anaplasmosis
Geographic distribution of Ixodes tick
Northeastern United States (Massachusetts)
Diagnosis of patient from Massachussetts with flu-like symptoms, fevers, fatigue, myalgias, headache, Anemia, thrombocytopenia, >LFTs and pleomorphic intraerytrhocytic ring forms (or maltese crosses) in giemsa stain
Babesiosis (Babesia microti) - Ixodes scapularis
Chancroid causative organism
Haemophilus ducreyi
Penile initial painful lesion with:
- Multiple and deep ulcers
- Base with grey to yellow exudate
- Organisms in long parallel strands “school of fish”
Chancroid
Haemophilus ducreyi
Are the initial ulcers of sexual herpes painful?
YES
Granuloma inguinale (donovanosis) causative agent
Klebsiella granulomatis
Deeply staining gram-negative intracytoplasmic cysts and a non painful initial lesion in sexual infection:
Donovanosis (Granuloma inguinale)
Thin, delicate corkscrew-shaped organisms on dark-field microscopy + no initial pain in an indurated sexual ulcer:
Syphilis (Treponema pallidum)
Lymphogranuloma venereum STI caused by
Chlamydia trachomatis
You “do cry” with…
H. ducreyi!
Chancroid
Child with erythematous pharynx with grey-white exudates + splots or blotches that blanch with pressure + sunburn with goose pimples + circumoral pallor
Scarlet fever (Group A streptococcus)
As with any streptococcal upper respiratory infection, Scarlet fever can predispose to:
Rheumatic fever and PSGN
Treatment with ______ ___ can prevent the development of rheumatic fever but NOT PSGN
Penicillin V
Main cause of osteomyelitis in childhood age
Staphylococcus aureus
Hematogenous seeding after bacteremia
Main cause of osteomyelitis in Sickle cell disease
Salmonella, Staph aureus
hematogenous seeding to infracted bone
Vertebral osteomyelitis secondary to hematogenous seeding from the lungs
Potts disease (Mycobacterium tuberculosis)
COPD disease exacerbation main viral triggers
Rhinovirus, influenzae, parainfluenzae
COPD disease exacerbation main bacterial triggers
H. influenzae
Moraxella catarrhalis
Streptococcus pneumoniae
COPD exacerbation presentation
Worsening productive cough
dyspnea on exertion
mild hypoxemia
wheezing
Serum heterophile antibodies that agglutinate with erythrocytes from related species (horse in Monospot or sheep in Paul-bunnell) diagnosis:
Infectious Mononucleosis (IM) from EBV
Heterophile antibody NEGATIVE mononucleosis-like syndrome
Cytomegalovirus infection (CMV)
