Flashcards in Micro Deck (83)
what mycobacteria are considered rapid growers?
What is a photochromogen?
Turns yellow on plate when grown in light
What mycobacteria are photochromogens?
What is a scotochromogen?
Turns yellow on plate with growth in light or dark
What mycobacteria are scotochromogens?
which mycobacteria are considered non-chromogens?
MTB**although classification does not technically apply
What serogroups of vibrio cholera cause disease?
O1 and O139
What type of E. coli produces shiga-like toxin?
Enterohemorrhagic E. coli (EHEC)
*most common strain O157:H7
What bacteria is most common cause of Guillan-Barre?
3 major caauses of pneumonia in COPD patients?
H. flu, moraxella catarrhalis, legionella pneumophilia
What are HACEK organisms
Causes of culture negative endocarditis
Haemophilus, Aggregetibacter, cardiobacterium, eikenella, Kingella
ideal protocol for blood cultures
3 sets, drawn at separate times (1-8 hrs apart), each paried with adequate volume (20-30cc)
Causes of bacterial meningitis in neonates
GBS, gram - bacilli, listeria
Causes of bacterial meningitis in kids
N. meningitidis, S. pneumo, H. flu type B
Causes of bacterial meningitis in adults
S. pneumo, N. meningitidis
Causes of meningitis in AIDS pts
S. pneumo, MTB, cryptococcus neoformans
Cause of rate bite fever (fever, rash, b/l ankle + shoulder pain)
what are the hemadsorption/hemagglutinin tests? What viruses can they detect?
hemagglutinins adsorb guinea pig RBCs
influenza and parainfluenza viruses
Name the 1 ssDNA non-enveloped viruses
2 dsDNA non-enveloped viruses
3 dsDNA enveloped viruses
ssRNA non-enveloped viruses
Picornaviridae (polio virus, enterovirus, HAV, rhinovirus)
dsRNA non-enveloped virus
ssRNA enveloped virus
-Flaviviridae (HCV, yellow fever, WNV, dengue)
-Togaviridae (rubella, EEE, WEE)
-Retroviridae (HIV, HTLV)
-Paramyxoviridae (RSV, parainfluenza, mumps, measles)
-Bunyaviridae (hantavirus, california encephalitis)
-Delta virus (HDV)
HBV is what type of virus?
HCV is what type of virus?
What subtypes of adenovirus are associated with hemorrhagic cystitis?
11 and 12
What subtypes of adenovirus are associated with childhood gastroenteritis?
40 and 41
What is antigenic drift and which virus shows this?
Antigenic drift=minor changes, due to point mutations in H&N genes