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205-304/General Microbiology Quiz
Terms in this set (27)
List 5 major STD's, the etiologic agent, treatment. Identify if vaccine available for each STD: Yes or No
etiologic agent treatment vaccine
Gonorrhoea antibiotic N
Chlamydia antibiotic N
Syphilis antibiotic N
Trichomoniasis anti-protozoal N
Human papilloma virus symptomiatic Y
The following organism(s) cause gastroenteritis primarily due to invasive virulence factors include
What is the etiologic agent, mode of transmission, & treatment for peptic ulcers?
Helicobacter pylori The Etiologic Agent for Peptic Ulcer. Most ulcers are caused by bacteria called Helicobacter pylori (H. pylori), which are believed to be transmitted from person to person through close contact and exposure to fecal matter or vomit. Treatment for peptic ulcers depends on the cause. Usually treatment will involve killing the H. pylori bacterium if present, eliminating or reducing use of NSAIDs if possible, and helping your ulcer to heal with medication
Organisms that have both major invasive and toxic virulence factors
Strep. Pyogenes (grp. A strep.)
Discuss the #1 cause of UTI"s and the special virulence factors
Bacteria are the most common cause of UTIs, although fungi rarely can also infect the urinary tract. E. coli bacteria, which live in the bowel, cause most UTIs. The female anatomy contributes to women's increased likelihood of contracting a UTI. α-hemolysin along with many other toxins serves various pathogenic roles during UTIs including adhesion, colonization, cytotoxic activity, etc. Moreover, virulence factors located on bacterial surface including capsule and lipopolysaccharides may also have the contribution to UTIs providing antiphagocytosis and antibactericidal complement activity
Clostridium perfringens causes a variety of diseases including:
The following organism(s) have been found commonly in poultry
Name 1 viral cause of lower respiratory infection, GI infection, skin infection. List reservoir, transmission, treatment & if a vaccine is useful at this time.
etiologic agent reservoir transmission treatment vaccine
Influenza virus humans respiratory antiviral Y
rotavirus humans fecal-oral symptomatic Y
warts virus humans direct symptomatic N
What is the structure and nucleic acid make-up of HIV? List 5 very common infections (from at least 3 kingdoms) seen in AIDS patients.
HIV-1 is composed of two copies of noncovalently linked, unspliced, positive-sense single-stranded RNA enclosed by a conical capsid composed of the viral protein p24, typical of lentiviruses. The RNA component is 9749 nucleotides long and bears a 5' cap (Gppp), a 3' poly(A) tail, and many open reading frames (ORFs). Herpes simplex virus 1 (HSV-1) infection, Salmonella infection, Candidiasis (thrush), Toxoplasmosis, and weakened immune systems
What are the three most common causes of vaginal infections: bacterial, fungal and protozoal?
Bacterial vaginosis, candidiasis (yeast), trichomonas
Causes dysentery and the virulence is always due to invasive and toxic factors, plus it usually has to be treated with antibiotics.
Common cause of toxic food poisoning (symptoms within 4-5 hrs.)
Causes gastroenteritis ranging from invasive virulence factors to toxic depending on the strain of bacteria, two common are ETEC and EHEC
The cause on-going pandemics (comma-shaped gnr, halophile).
The most common cause of bacterial gastroenteritis
the following organism(s) have been implicated in large outbreaks due to contaminated milk products and symptoms often mimmic appendicitis
Common methods of contracting infectious diarrhea include:
Pets Food Water
Organism(s) cause food poisoning / gastroenteritis primarily due to toxin production include
Immunologic complications of influenza virus infection can include
Causes herpangina (fever, sore throat, papules or vesicles).
Causes fever blisters in the mouth.
Underlying cause of hairy lekoplakia (slightly raised, white areas on the tongue)
Aerobic gram positive rod is considered normal flora in the mouth or throat.
Primary etiologic agent of acne
List the 5 known hepatitis viruses; list transmission, chronicity rate (low or high), treatment and vaccine availability
etiologic agent transmission chronicity treatment vaccine
HAV fecal-oral low symptomatic Y
HBV blood, body fluid high antiviral Y
HCV blood, body fluid high antiviral N
HDV blood, body fluid high antiviral Y(B vaccine)
HEV fecal-oral low symptomatic N
The main reason new vaccines have to be prepared against influenza virus:
Antigenic changes on the envelope
Major systemic complication of strep. pyogenes infection include:
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