Microbiology (Joe) Flashcards

Microbiology (Joe) (220 cards)

1
Q

Neisseriaceae

A

Gram ( - ) Cocci

Genus: Neisseria

coffee bean shaped

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2
Q

Vibrianaceae

A

Gram ( - ) Bacilli

Genus: Vibrio

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3
Q

Campylobacter

A

Gram ( - ) Bacilli

mcc of diarrhea

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4
Q

Pseudomonas

A

Gram ( - ) Bacilli

blue/green pus

warm, moist places

mc pneumonia with cystic fibrosis patients

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5
Q

Haemophilus

A

Gram ( - ) Bacilli

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6
Q

Francisella

A

Gram ( - ) Bacilli

Rabbit Fever

bugs bunny is french

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7
Q

Legionella

A

Gram ( - ) Bacilli

water droplets

Legionaire’s Disease

(minor form of Legionaire’s = pontiac)

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8
Q

Spirochaetales

A

Treponema (syphillis)

Borrelia (Lyme disease)

Leptospira (Weil’s Disease/ hemorrhagic jaundice)

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9
Q

Mycoplasmataceae

A

Mycoplasma

Atypical pneumonia

  • lacks cell wall
  • penicillin is ineffective
    • penicillin inhibits peptidoglycanstops cell wall synthesisno cell wall present
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10
Q

Chlamydia Trachomates

A

Reiter’s Disease

track mates write

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11
Q

Chlamydophila psittaci

A

Parrot Fever

“the parrot sits low on the shoulder”

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12
Q

Rickettsiaceae Coxiella

A

Coxiella Burnetii causes Q fever - spread via milk

rickettsia rickettsii - spread by insects

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13
Q

Hepadnaviridae

A

Hepatitis B Virus

DNA Virus

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14
Q

Paramyxoviridae

A

Measles virus, mumps virus

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15
Q

Coronaviridae

A

Corona virus

Causes SARS - China Epidemic in 2002

sorry about coronas in china

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16
Q

Rhabdoviridae

A

Rabies virus

  • bullet-shaped virus*
  • hydrophobia

*hunt rabid animals with a bullet

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17
Q

Filoviridae

A

Ebola virus

  • 5 types, 4 will cause hemorragic diarrhea

filo fourfive

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18
Q

Reoviridae

A

Rotavirus

mcc of infantile diarrhea

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19
Q

Togaviridae

A

Rubella virus

German measles

german toga party

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20
Q

Calciviridae

A

Norwalk virus - causes gastroenteritis

associate w cruise ships

calnival cruises

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21
Q

IgA Antibody

A

secretory (mucosal) antibody

mucous membrane (saliva, tears)

breast milk

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22
Q

IgD Antibody

A

Helps IgG

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23
Q

IgE Antibody

A

Parasitic infections

Allergic reactions

increases in Hodgkin’s

  • puritis (intense itching)
  • Dx: biopsy for Reed Sternberg cells
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24
Q

IgG Antibody

A

First to increase (upon second exposure)

Most numerous

Crosses placenta (“Gee Ma, thanks”)

Anamnestic response - without amnesia = body remembers for next time

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25
IgM Antibody
Pentameter - 10 binding sitesLargest and heaviestFirst to increase (first exposure) largest m = muscle
26
Interleukin I
Made by macrophages activates lymphocytes
27
Interleukin II
Made by CD4 = T cell = QB of immune system
28
Interleukin III
Made by bone marrow
29
MHC/ Major Histocompatability Complex
self vs non-selfgraft and organ rejection **T-cells recognize MHC I** B-cells recognize MHC I and II
30
Diseases by Staph Aureus (5: "*STOIC"*)
*"STOIC" =* **S** (scalded skin syndrome), **T** (toxic shock), **O** **(OSTEOMYELITIS\*),** **I (impetigo\***→ **honey crusted lesion around mouth)**, **C** (carbuncles: many infected hair follicles/furuncles *"a carload of furuncles")* * *​***MRSA:** methicillin-resistant staph aureus * organism seen in **athletic locker rooms** * **Vancomyosin =** only effective antibiotic
31
Diseases by Strep Pyogenes (6: "SERGIS")
*group A, beta-hemolytic strep​* **"SERGIS"** = **S** (strep throat), **E** (erysipelas), **\*R (rheumatic fever),** **G** (glomerulonephritis), **I** (impetigo - #2 cause), **S** (scarlet fever = *strawberry tongue*) * **Rheumatic Fever:** * mnemonic*: "Can Sammy Suck Ethyl's Polyp's?"* * **C = carditis** * **MacCallum Patch in posterior left atrium** * **S = Syndenham's Chorea\*** * **​strep-related chorea affecting kids** * S = subcutaneous nodule * E = erythemia marginatum * P = migratory *poly*arthritis * **Nephritic Syndrome** * **Vegetation on mitral valve** * Aschkoff Bodies
32
Rheumatic fever
strep pyogenes - group A beta hemolytic strep carditis (MacCullum patch in post left atrium), sydenhams chorea, subcutaneous nodule, erythema marginatum, migratory polyarthritis
33
Complement System | (Purpose and Pathways)
_Purpose_: enhance phagocytosis/cellular lysis _Pathways:_ * **Classical (****Ag-Ab)** * **Alternate** (Sheep RBC's?)​ * Both pathways **meet at C3B** * **C5b-C9 = MAC** (Membrane Attack Complex) * C9 → "terminal complement"
34
Inclusion Bodies
Bodies present in nucleus or cytoplasm of certain cells in infection by filterable viruses
35
Inclusion Bodies: ## Footnote **Aschoff Bodies**
Rheumatic Fever ## Footnote *extensive = MacCallum's Patch*
36
Inclusion Bodies ## Footnote **Babes Ernst Granules**
Metachromatic granules seen in diptheria (pseudomembrane in throat)
37
Inclusion bodies Downey Cell
**mononucleosis** → *"don't let mono get you down"* ## Footnote **atypical lymphocytes**
38
Inclusion Bodies ## Footnote **Epithelioid Histiocyte**
TB Giant epithelial cells
39
Inclusion Bodies: **Gohn Complex**
TB (inactive phase)
40
Inclusion Bodies: ## Footnote **Guarneri Bodies**
Small pox (variola) * *"eradicated in 1977 from vaccines"*
41
Inclusion Bodies ## Footnote **Gummas**
tertiary syphillis
42
Inclusion Bodies: ## Footnote **Koplik Spots**
Measles on buccal mucosa white/bluish spots
43
Inclusion Bodies: ## Footnote **\*Lipofuscin**
"old age pigment" buildup of lipofuscin in organs = \***Brown's atrophy**
44
Inclusion Bodies: ## Footnote **Lewy Bodies**
Parkinson's (AKA *pa**ralysis agitans)*
45
Inclusion Bodies: ## Footnote **\*Mallory Bodies**
Hepatitis (alcoholism)
46
Inclusion Bodies: ## Footnote **Negri Bodies**
Rabies (hydrophobia)
47
Inclusion Bodies: ## Footnote **\*Reed Sternberg**
Hodgkin's
48
Inclusion Bodies: ## Footnote **\*Russell Bodies**
found in **plasma cells,** consists of antibodies * from chronic inflammation and malignant disorders associated with **multiple myeloma**
49
Inclusion Bodies: ## Footnote **Plummer Vincent**
esophageal webbing
50
Active vs Passive Immunity
**Active** = must *actively* make own antibodies (Ab) **Passive =** *given* antibodies (Ab), received from outside→in
51
Natural Active Immunity
exposure to disesase → body reacts *ex) measles, chicken pox triggers antibody production*
52
Artificial Active Immunity
injection of _attenuated organism_ *ex) tetanus **toxoid** = inactivated protion triggers immune system to make antibody*
53
Natural Passive Immunity
Given antibodies... * **in utero: IgG** *("gee thanks, ma")* * **breastfeeding:** **IgA**
54
Artificial Passive Immunity
injection of _preformed antibodies_ * ex) tetanus **antitoxin** = premade antibody, attacks _circulating_ toxins, not _bound_ toxins* * ***Tetanus antitoxin cannot cross blood-brain barrier***
55
Endotoxin
toxin from **lipopolysaccharide layer of the cell**
56
Exotoxin
Toxin from outside cell from waste products **Heat labile** *(ex: staph)*
57
Fomite
vector is inanimate object
58
Hapten
partial antigen/half antigen **does not stimulate immune response** (must combine with protein to be toxic)
59
Neurotoxin
affects nervous system ## Footnote ***Botulism, tetanus***
60
Opsonin
enhance phagocytosis by **marking target for strike**
61
Prion
cannot be autoclaved/sterilized
62
Type I Hypersensitivity
* anaphylactic (immediate, acute) * allergy * **IgE, mast cells, basophils**
63
Type II Hypersensitivity
* **cytotoxic** * **Goodpasteur's** * (lung and kidney) * *"You go outside in the Good-pasture, take a deep breath, then you have to pee"* * caused by group A beta-hemolytic strep * **Erythroblastosis Fetalis** * **​**Rh(+) baby, Rh(-) mother * *Mothers worry, have negative thoughts* * **blood transfusions** * **Myasthenia Gravis** * **​**weakness and rapid fatigue of muscles under voluntary control * IgG targets cell for phagocytosis * *Type II = 2 things* * **antigen + antibody**
64
Type III Hypersensitivity
* immune-complex mediated * Glomerulonephritis, lupus, RA * **Arthus rxn** = local necrosis * **Serum Sickness** = systemic
65
Type IV Hypersensitivity
* Delayed * Cell-mediated *(only one NOT antibody-mediated)* * TB, contact dermatitis *(poison ivy, poison oak, etc.)* * Transplant rejection via MHC
66
Autotroph
eats inorganic material
67
Heterotroph
eats organic material
68
Saprophyte
eats dead/decaying material (organic)
69
Parasite
eats off *living* organisms
70
Zoonosis
transfer of disease from **animal to human** ***ex) Anthrax*** * ***woolsorter's disease"*** * ***Gram ( + ) rod*** * ***sporulates***
71
Microaerophilic
Lives in areas of **reduced O2** high-altitude plants grown in **Candle Jar culture**
72
Flagella Arrangement
**Monotrichus** = single flagella, one pole **Lophotrichus** = multiple flagella on one pole (tuft at end) **Amphitrichus** = "both" flagella, both poles **Peritrichus** = "around", flagella everywhere
73
Lab Tests: ## Footnote **Ames Test**
Salmonella typhimurium
74
Lab Tests: ASO Titer
Antistreptolysin O Titre Strep pyogenes test Rheumatic Fever
75
Lab Tests: BOD
Biological Oxygen Demand best test for water pollution
76
Lab Tests: Catalase
**Staph** vs. **Strep** ## Footnote *(cat + ) (cat - )*
77
Lab Tests: Chick Embryo Culture
virus culture
78
Lab Tests: Chocolate Agar\*
*AKA Thayer Martin Agar AKA Heated Blood Agar* for **Gonorrhea**
79
Lab Tests: Coagulase
* *Staph Aureus** vs other Staph * (pathogenic vs non-pathogenic staph)*
80
Lab Tests: Coombs
**Erythroblastosis Fetalis** *(TII hypersensitivity)*
81
Lab Tests: Dick Test
Scarlet Fever
82
Lab Tests: HLA B27
Seronegative arthridities ## Footnote *(PEAR = psoriatic, enteropathic arthorpathy, AS, Reiter's)*
83
Lab Tests: Giemsa Stain
protozoa
84
Lab Tests: HLA DR5/CD4
**AIDS** ELISA test checks DNA Western Blot checks proteins ``` If 2 ELISA (+), do WB. If WB (+) = AIDS Dx ```
85
Lab Tests: Mannitol Salt
Staph
86
Lab Tests: Nuchal Rigidity
Meningitis ## Footnote *(low glucose)*
87
Lab Tests: ## Footnote **Paul Bunnel**
Heterophile Agglutination test for **mononucleosis** **Mononucleosis** * heterophile antibody = Ab seen in microscopy * *heterophile agglutination = Paul Bunnel* * Downey cell = atypical lymphocyte
88
Lab Tests: Quellung Reaction
Strep Pneumoniae *(mcc of meningitis)* *"quellung is swelling" (**of strep capsule)*
89
Lab Tests: Sabouraud Agar
fungi
90
Lab Tests: Tissue culture
virus culture
91
Lab Tests: ## Footnote **\*Weil Felix**
Positive for all Rickettsia **except Coxiella Burnetii (Q fever)**
92
Lab Tests: ## Footnote **\*Widal**
Typhoid Fever
93
Lab Tests: ## Footnote **\*Tzank Test**
Herpes Zoster
94
Syphilis Testing (Treponema, spirochete)
Wasserman VDRL = *Venereal Disease Research Lab* Darkfield
95
Tuberculosis Testing
* **BEST TB TEST = Sputum Culture** (shows active) * Tine Test = skin prick * **PPD/Mantoux Test** = purified protein derivative * Delayed Hypersensitivity Test * **Ziehl Nielson Staining** * **​**acid fast organisms * *"my ass is fast" = **_my_**cobacterium **_ac_**id _fast_* * *_​_*Chest x-ray = **Gohn Complex** in Lung * BCG vaccine = uses mycobacterium bovis
96
Pasteurization Methods: Sterilization/Autoclave
steam heat under pressure, denatures membranes 274°F, 15 mins ## Footnote **ineffective against prions**
97
Vaccinations Inactivated
SALK = poli vaccine rabies
98
Vaccinations Live Attenuated
measles, mumps, rubella ## Footnote **Sabin = oral**
99
Studies
**Case Control:** IDs risk factors **Double Blind:** eliminates placebo **Retrospective/Cohort:** go back in time
100
Blue/Green pus
**Pseudomonas Aeruginosa** * open burn infection, unsanitized hot tub, contact lenses * **hot, warm places** * flouresces blue under UV light, procyanin * **#1 cause of pneumonia in Cystic Fibrosis patients**
101
Red Pus
Serratia marcenscens
102
White Pus
Chlamydia
103
Yellow/gold pus
staph aureus *Au = gold*
104
Yellow/green pus
Gonorrhea
105
Acid Fast Stain
Mycobacterium *"My ass is fast"*
106
Blood Agar Stain Alpha Hemolysis
Alpha = partial **(green ring)** * **strep pneumoniae** * *mcc meningitis* * **strep viridans** * *​***SBE**/ subacute bacterial endocarditis * **splinter hemorrhages under fingernails** * must have Rheumatic Fever first
107
Blood Agar Stain Gamma Hemolysis
gamma = none, red ring **Strep Mutans** * cavities/ "dental caries"
108
Giemsa Stain
Protozoa
109
Gram Stain Procedure
_Primary_ = crystal violet or methylene blue * *(Gram + stains purple/blue)* _Fixer_ = Iodine, "mordant" _Decolorizer_ = alcohol wash _Counterstain_ = saffarin
110
Drugs: Iodine
pre-op disinfectant
111
Drugs: MRSA
Methycilline-Resistant Staph Aureus Hospitals use Vancomycin now
112
Drugs: Penicillin
inhibits cell wall synthesis | (glycoproteins)
113
Drugs: Sulfa
competes with PABA | (Para-aminobenzoic acid)
114
Drugs: Tetracycline
for gram negative and positive (broad spectrum) inhibits protein synthesis turns teeth gray or yellow brown
115
Famous People: Ehrlich
Sulfa drugs ## Footnote **First treatment for Syphilis**
116
Famous People: Flemming
Discovered Penicillin (1928)
117
Famous People: Koch
"proved bacteria causes disease" Koch's 4 postulates **Anthrax Vaccine**
118
Famous People: Lister
Antiseptis sterilization of surgical instruments
119
Famous People: Pasteur
Father of Pathology Father of GErm Theory Rabies vaccine
120
Famous People: Walter Reed
Yellow Fever | (spread by ades egypti mosquito)
121
Famous People: Sabin
Live Polio vaccine given orally
122
Famous People: Salk
**Dead Polio vaccine** given by injection, before Sabin
123
Famous People: Semmelweiss
handwashing before delivering a baby ## Footnote **reduced Puerperal Fever (aka Childbed Fever)**
124
Colony Variation
*Description of morphology upon examination of an agar plate:* ``` **R = rough S = smooth** ``` ``` D = dwarf H = spreading M = mucoid capsule forming: related to virulence O = compact (O vs H) ```
125
Koch's Postulates
1. **Find** microorganism in patients 2. **Isolate** and grow 3. Observe: **should cause disease** in healthy individual 4. **Reisolate** microorganism from inoculated people
126
Cell Sex Life
* *_Conjugation_\*** * *plasmid DNA,** transfer via sex pilus (little penis!) _Transduction_ transfer of genetic material from between bacteria *bacteriophage: altered virus* **_Transformation_\* direct uptake of free DNA**
127
Governmental Agencies: ## Footnote **CDC Center for Disease Control**
**Statistics, NOT RESEARCH** (compiles **morbidity and epidemiological statistics)** Branch of US Navy Part of US Health Services
128
Governmental Agencies: ## Footnote **EPA Environmental Protection Agency**
monitors quality of soil, air and water
129
Governmental Agencies: ## Footnote **FDA Food and Drug Administration**
regulates health products released to public **Monsanto**(?) | (regulates product misrepresentation, promotion, advertising)
130
Governmental Agencies: ## Footnote **NIH National Institute of Health**
**research, not statistics** Located in Bethesda, Maryland
131
Governmental Agencies: ## Footnote **OSHA Occupational Safety and Health Administration**
makes rules regarding occupational toxicity levels of hazardous materials ## Footnote **powerful agency**
132
"Emerging"
new disease or rapid increase in incidence or in geographic range ## Footnote *Ex) AIDS, Ebola... in USA: TB, MRSA, H1N1/Swine Flu*
133
"Endemic"
small number of cases in specific location present all the time
134
**"Incidence"\***
**number of NEW cases in a given time period** *ex) how many new cases last year?*
135
"Pandemic"
more than expected # of cases of a disease *worldwide*
136
**"Prevalence"\***
**total # of cases at a *particular point in time*** *ex) total cases right now*
137
Leading Causes of Death | (infants, adults/US, adults/worldwide)
_Infants_ * *1. Congenital malformations 2. Prematurity** _Adults_ (United States)​ * *1. Heart Disease 2. Cancer 3. Stroke** 4. Respiratory infection 5. Accidents _Adults_ (Worldwide) * *1. Tuberculosis** 2. Malaria
138
Water Purification Process
_Primary (Sewage) Treatment_ filtration → flocculation → sedimentation → sludge digestion _Secondary Treatment_ sand filtration → **aeration**\*→ chlorination → possible fluoridation **\*aeration decreases BOD/ biological oxygen demand**
139
Helminth Types
*"**_T_**ry **_R_**onnie **_F_**irst"* ***_T_**apeworm / **_R_**oundworm / **_F_**luke **_C_**estodes / **_N_**ematodes / **_T_**rematodes (alphabetical order match)* **_Tapeworms: "Cestodes"_** * long, ribbon-like body * Head = "scolex" (attaches to intestine) * Body = proglottids **_Roundworms: "Nematodes"_** * cylindrical, unsegmented * *Spongebob* **_Flukes: "Trematodes"_** * flat, ovoid body
140
Tapeworms/Cestodes ## Footnote **Hymenolepis Nana**
Dwarf tapeworm ## Footnote *Bethanie says her Nana is a dwarf*
141
Tapeworms/Cestodes ## Footnote **Diphyllobothrium latum**
Fish tapeworm may cause B12 deficiency Pacific NW Salmon *Channing Latum looks like a fish? Idfk*
142
Flukes/Trematodes ## Footnote **Shistosoma Japonicum**
Blood Host = snail S/Sx: * Swimmer's itch * mcc of death by a helminth (parasitic worm)
143
Flukes/Trematodes ## Footnote **Paragonimus Westermani**
Pulmonary (lung) Crayfish
144
Roundworms/Nematodes ## Footnote **Ascaris lumbricoides**
most common roundworm most common helminthic infection worldwide Roundworm: *"my ass is round"*
145
Roundworms/Nematodes **Wuchereria Bancrofti** (Filiariasis)
mosquitoes **S/Sx:** * Elephantitis * lymphatic Blockage
146
Rondworms/Nematodes **Necator Americanus** (Hookworm)
Fecal-contaminated soil wear shoes to prevent **mc hookworm in US**
147
Roundworms/Nematodes **Enterobius vermicularis** (Pinworm/threadworm)
anus-finger-mouth Scotch-Tape Test/ **Anal Cellophane Test** **mc helminth in the US**
148
Roundworm/Nematode **Onchocerca volvulus** (River blindness)
African flies
149
Roundworm/Nematodes **Loa loa** (River eye worm)
Flies "African Eyeworm"
150
Roundworm/Nematodes **Trichonella spiralis** (Trichinosis)
raw pork lives in striated muscles Dx on xray, mm biopsy to confirm
151
Roundworms/Nematodes **Trichuris trichura** (whipworm)
*"whip those T's together"* oral-fecal weight loss
152
Virus Transmission
*Most commonly transmitted or acquired via the **respiratory system***. _Exceptions_: * **\*Arboviruses = mosquitoes** * encephalitis, yellow fever, dengue * Polio = oral/fecal * **\*Hepatitis** * Hep**A**: oral/fecal * Hep**B**: sexual transmission, IV drugs * Hep**C**: transfusions, tattoos
153
**Herpes Simplex** | (two types)
Viral Diseases and Skin Reactions **Type 1** * ​fever blisters (cold sores) - *"above the belt"* * Trigeminal/ "Gasserion" ganglion **Type 2** * Genital Herpes - *"below the belt"*
154
**Herpes Zoster**
viral disease with skin reaction * **Shingles** in adults * **does not cross midline** * **hides in DRG** * follows dermatome * stress-induced
155
## Footnote **Molloscum contagiosum**
viral disease with skin reaction pink cauliflower lesion on female genitalia
156
## Footnote **Rubella**
Viral disease with skin reaction **German Measles** ***"**3-day measles"* **most susceptible in 1st trimester**
157
**Rubeola**
viral disease with skin reaction **Red Measles** *("Ruby Red")* **Koplik spots on buccal mucosa** * white/blue spots
158
**Varicella (chicken pox)**
viral disease with skin reaction **maculopapularvesicular** **rash** = red, elevated fluid-filled lesions
159
**Variola**
viral disease with skin reaction **Small Pox\*** **guarneri bodies** *(\*eradicated in 1977 via vaccine)*
160
**Coxsackie Virus B**
viral disease with enteric reaction **childhood dysentery** (hand, foot and mouth disease)
161
**Adenovirus**
viral disease with respiratory reaction ## Footnote **conjunctivitis, pharyngitis**
162
**Influenza Virus**
**antigenic shift and/or drift** * small mutation = drift * big mutation = shift **causes the flu** no fuckin shit
163
**Mumps**
* viral disease w respiratory reaction * caused by **sidomegalic paramyxoid virus** * causes parotiditis * leads to **LMN disease of CN7 (Bells Palsy)** * Complications * **sterility** from oophritis or orchitis
164
**RSV Respiratory Syncytial Virus**
causes **croup and bronchiolitis**
165
**Rabies**
* **bullet-shaped** * RNA, **rhabdovirus** * **negri bodies** in brain * hydrophobia
166
**Reyes Syndrome**
fatty liver (hepatomegaly) encephalopathy
167
**AIDS**
* caused by retrovirus (HIV) * **reverse transcriptase (RNA → DNA)** * **CD4 cells affected** * ​T-helper cells * Complications * ***pneumocystis carinii*** * **toxoplasmosis** * **Kaposi sarcoma** * Giardia Lamblia
168
AIDS Complications ## Footnote **Pneumocystis carinii**
**#1 fungal infection in AIDS** **#1 cause of death in AIDS *(from pneumonia)***
169
AIDS Complications ## Footnote **Toxoplasmosis**
#1 parasitic infection in AIDS #1 protozoal infection in AIDS **spread by cat feces → birth defects**
170
AIDS Complications ## Footnote **Kaposi Sarcoma**
#1 cause of **death by cancer** in AIDS
171
Hepatitis A
* fecal/oral * **NOT a carrier for life** \*ONLY ONE * **no sequelae** (B,C,D = liver cancer) * RNA virus * *"get it and get over it"*
172
Hepatitis B
* sexual transmission, IV drugs * carrier for life * sequelae: **liver cancer** (also true for: Hep's B/C/D) * **DNA ONLY\*** (only one DNA, A/C/D = RNA) * most lethal in acute phase * Endemic in asian cultures
173
Hepatitis C
* **blood transfusion, tattoos** * carrier for life * seq: liver cancer * RNA * AKA "non-A, non-B hepatitis"
174
Hepatitis D
* **co-infectious with Hep B** * carrier for life * liver cancer * RNA * **aka "Dane" particle - only replicates in presence of Hep B**
175
Arboviruses Group A
causes all equine **encephalitis** diseases: Western, Eastern, St. Louis **​(Eastern Equine Encephalitis = West Nile Virus)** **​**all spread by **mosquitoes**
176
Arboviruses Group B
**_Yellow Fever_** "yellow" = jaundice discovered by **Walter Reed ades agypti mosquito** **viscerotropic virus** (affects liver) **_Dengue Fever_** vector: **mosquito** develop **backbone fever** or **"bone crusher disease"**
177
Yersinia pestis | (Pasteurella pestis)
**Bubonic Plague, "black death"** arthropod-borne bacteria Rat flea = *xenopsylla cheopis* Bubos = neck and axillary lymph node enlargement
178
Francisella Tularensis
**Tuleremia** **Rabbits** (Rabbit Fever) **Hunters at risk** *"The **_Fr_**ench _Rabbits_ smell **_Tul_**ips"*
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Clostridium botulinum
**Botulism** * **food-borne bacteria** * vector: **home-canning** * Prevents ACh release → **Floppy Baby Syndrome** * **Nitrates added to meat to prevent botulism ​** **1st symptom: diplopia** (double-vision) 2nd symptom: death
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Campylobacter jejuni
* food-borne bacteria * **mcc gastritis** * #1 cause of **food poisoning**
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Listeria monocytogenes
* **Listeria** * food-borne bacteria * **deli meats and soft cheeses**
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Salmonella entrides
**Salmonella** * **eggs and poultry** * **12-24 hours after ingestion** * **Fever**
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Staphylococcus Aureus
Staphylococcus * food-borne bacteria * **creams and custards** * **2-4 hours** after ingestion * **no fever** * stable toxin
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Salmonella typhi
Typhoid * rose-colored spots on abdomen * Peyer's patches in ileum
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Brucella abortus
Brucellosis Bang's Disease = undulant fever Spontaneous abortions in cattle
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Vibrio Cholera
**Cholera** * **comma-shaped** * **rice water stools** (massive diarrhea) * **no lymph enlargement**
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Shigella
**Shigella** * **water and soil borne** * **bacterial dysentery** (w. blood in stool)
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**E. coli** *(enterotoxigenic form & enterohemorrhagic form)*
* *enterotoxigenic form* → **Montezuma's Reveng** * **​****"Traveler's Diarrhea"** * *enterohemorrhagic form* → **E. coli OH157** * Hamburger's Disease * **fatal** ​ * #1 cause **Otitis Externa**
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Bacillus anthracis
**Anthrax,** AKA *"Woolsorter's Disease"* * **Gram (+) rod** * **sporulates** * **Zoonosis** (infectious dzs of animals naturally spread to humans)
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Clostridium tetani
**Tetanus** * **trismus** (lockjaw) * **inhibits GABA and Glycine** (blocks inhibitory neurotransmitter's)
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Clostridium perfingins
AKA *Clostridium wlichi*
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Haemophilus influenza
* *#1 cause of otitis media** * (middle-ear infection)* *#2 cause = strep pneumoniae*
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Leptospira interrogans *Leptospira ictohemorrhagica*
**Weil's Syndrome** | (hemorrhagic jaundice)
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Borrelia burgdorferi
**Lyme's Disease** * vector = **deer tick** ***(**Lxodes scapularis)* * **Erythema Chronicum Migricans** * AKA* b*ullseye rash*
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Borrelia recurrentis
**Relapsing Fever** *(recurrent)* **fever comes and goes** *(relapsing)*
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Treponema pallidum
STD: **Venereal Syphilis** * **Primary = hard, painLESS chancre** * **Secondary** = **maculopapular rash** w condylomata lata * **Latency** = may/may not show symptoms * **Tertiary = neurosyphilis, gummas, Argyll Robertson pupil, tabes dorsalis** * ("tabes" = wasting, "dorsalis" = back) posterior columns affected \*Treponema differentiation: **Dark Field Microscopy**
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Treponema pertenue
**Non-venereal syphilis** casual contact \*Treponema differentiation: Dark Field Microscopy
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Dysentery
**Childhood** = Coxsackie virus B (hand, foot and mouth dz) **Bacterial** = *shigella* **Amoebic** = entamoeba histolytica (infective stage = cyst)
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Bacterial Types
**Pleomorphic = many shapes** (diptheria) **Rabies = bullet-shaped** **Vibrio = comma-shaped** (curved)
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Bacterial Enzymes that add virulence: ## Footnote **Coagulase**
**Staph** **makes thicker** catalyses breakdown of fibrinogen to form fibrin
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Temperatures for Bacterial Growth
Psychrophilic: 15°C or lower * *Mesophilic: 20-4****0°C, optimal=37°C** (human temp) * *\*killed by fevers** Thermophilic: 45°C or above
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mcc Meningitis by age group
_Newborns_: **E. coli** *("little shits")* _Infants/older children_: **strep pneumoniae** _Adults_: **strep pneumoniae** \*Most lethal meningitis **= *Naegleria Fowleri*** causes 1° amoebic meningoencephalitis
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Entamoeba histolytica | (trophozoite and cyst)
**Amebiasis** **infective form = cyst** Protozoal infection (Giemsa stain)
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Leishmania donovani
Kala-Azar (Leishmaniasis) sandflies viscerotropic Dehli Boil
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**Giardia lamblia** (trophozoite and cyst 4 pairs of flagella)
**Giardiasis, "beaver fever"** **infective form = cyst** **hikers, drinking stream water** **4 pairs of flagella** Protozoal infection (Giemsa stain)
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Plasmodium vivax
**Malaria (most common form of malaria)** female **anopheles mosquito** ***Merozoite stage*** * propogation through body * becomes pathogenic at this stage\*
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Plasmodium Falciparum
**Malaria** (most **_f_**atal **_f_**orm) anopheles mosquito **Black Water Fever** (urinating oxidized blood) Protozoal Infection (Giemsa Stain)
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Toxoplasma gondii
**Toxoplasmosis** **cat feces** **miscarriages** if 1st exposure and in first trimester Protozoal Infection (Giemsa Stain)
209
Trypanosoma cruzi\*
**Trypanosomiasis** **Kissing "reduviid" bug** **Chaga's Disease** Protozoal Infection (Giemsa Stain)
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Trypanosoma gambiense\*
**Trypanosomiasis** **Tsetse fly** **African sleeping sickness** **neurological problems affecting the brain** Protozoal Infection (Giemsa Stain)
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Virulence Factors of Fungi
Keratinase = attacks skin Proteinase = attacks muscle Elastase = attacks connective tissue
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Aspergillus fumigatus\*
Fungal infection ## Footnote **Aspergillosis** **nuts and grains** **fungus ball in lungs**
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Endemic fungus Histoplasmosis
**Mississippi/Ohio Valley Fevers** **Calcific lesions in lung**, similar to TB
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Pneumocystis carinii
* *AIDS Pneumonia** vector: pigeon droppings **(assoc. w/all birds)** ``` #1 fungal infection in AIDS #1 cause of death in AIDS (from pneumonia) ``` fungal
215
Sporotherix schenckii
Sporotrichosis flowers gardeners at risk fungal
216
Cutaneous Mycoses "ringworm, dermatophytoses" *superficial fungal infection of the skin*
Detection: * **Woods** **Lamp** = UV light * **skin scrapings** from periphery of lesion, * tested in **KOH/ potassium hydroxide** * no blood tests
217
Cutaneous Mycoses
**tinea barbae** = ringworm of beard **tinea capitis** = scalp **tinea corporis** = body **tinea cruris** = groin, *"jock itch"* **tinea pedis** = foot, *"athlete's foot"* **tinea unguinum** = nail
218
Coxiella burnetti\*
**Rickettsia** **Q-fever** **milk** * *Weil-Felix (-)\*** * \*all rickettsia W-F(+) except coxiella burnetti*
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Rickettsia prowazeki
E**p**idemic typhus, *aka "Bril-Zinsser's dz"* head louse
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Rickettsia rickettsii
* *Rocky Mountain Spotted Fever** * "Dermacenter andersoni"* **rash on wrists and ankles** **Wood tick**