30 Questions
Which of the following is a major problem associated with Strep. Pyogenes infections?
Nonsuppurative sequelae
What is the major cause of pneumoniae and meningitis?
Streptococcus pneumoniae
Which of the following is a major virulence factor of Neisseria gonorrhoeae?
Capsule
Which of the following is a symptom of gonorrhea in males?
Dysuria
Which of the following is a major virulence factor of Neisseria meningitidis?
Capsule
Which of the following bacteria is commonly found in the upper respiratory tract of approximately 5% of the population?
Klebsiella
Which bacteria is known for producing swarming colonies and a film of confluent growth?
Proteus spp.
Which bacteria is a common cause of urinary tract infections (UTIs) and wound infections?
P. mirabilis
Which bacteria is known for causing plague and can be transmitted via rat flea bites?
Yersinia pestis
Which bacteria is an opportunistic pathogen and is part of the normal intestinal flora?
Proteus spp.
Which of the following is the most virulent species of Staph bacteria mentioned in the text?
Staphylococcus aureus
What is the main route of infection for Staphylococcus aureus?
Trauma/abrasion
Which of the following is NOT a virulence factor of Staphylococcus aureus?
Enterotoxins
What type of infections are typically suppurative and surrounded by necrotic tissue?
Skin and wound infections
Which of the following is NOT a characteristic of Streptococcus pyogenes?
Normal flora
Which disease is caused by the inhalation of dried birthing fluids and can also be spread by ingestion of unpasteurized milk?
Q fever
Which disease is characterized by high fever, rash, and rapid dissemination affecting several types of tissue?
RMSF
Which disease is the only rickettsial disease transmitted from animals to humans by inhalation?
Q fever
Which disease is the single most frequent bacterial sexually transmitted disease in the United States?
Chlamydia trachomatis
Which disease causes chronic keratoconjunctivitis that can lead to blindness if left untreated?
Chlamydia trachomatis
Which of the following bacteria is associated with gram-positive organisms?
Klebsiella
Which bacteria causes inflammation of the mucosa of the small and large intestine, resulting in symptoms such as nausea, vomiting, and profuse diarrhea?
Salmonella
Which bacteria is associated with the disease known as typhoid fever, which begins as inflammation of the intestine followed by invasion of lymph nodes, lymphatic system, blood, organs, and tissues?
Salmonella
Which bacteria causes dysentery, resulting in necrosis, ulceration, and inflammation of the large intestine, as well as watery diarrhea with mucus, blood, and pus?
Shigella
Which bacteria is commonly isolated from gastrointestinal infections, and can cause enteropathogenic, enterotoxigenic, enteroinvasive, and enterohemorrhagic diseases?
Escherichia coli
Which bacteria is the causative agent of bubonic and pneumonic plague?
Yersinia pestis
Which bacteria causes severe gastroenteritis, particularly in areas with contaminated water or improperly prepared food?
Vibrio cholerae
Which bacteria is an opportunistic pathogen commonly found in hospital environments, causing infections in burn wounds and respiratory tracts?
Pseudomonas aeruginosa
Which bacteria is the most common cause of gastroenteritis worldwide, with self-limiting symptoms that resolve in 3-6 days?
Campylobacter jejuni
Which bacteria causes leptospirosis in humans, transmitted through contact with infected animal urine?
Leptospira
Study Notes
Summary of Bacterial Pathogens
- Yersinia pestis is the causative agent of bubonic and pneumonic plague, with mortality rates nearing 100%.
- Vibrio cholerae is a gram-negative rod that causes severe gastroenteritis, particularly in areas with contaminated water or improperly prepared food.
- Pseudomonas aeruginosa is an opportunistic pathogen commonly found in hospital environments, causing infections in burn wounds and respiratory tracts.
- Campylobacter jejuni is the most common cause of gastroenteritis worldwide, with self-limiting symptoms that resolve in 3-6 days.
- Leptospira is a zoonotic bacteria that causes leptospirosis in humans, transmitted through contact with infected animal urine.
- Borrelia burgdorferi is the etiologic agent of Lyme disease, transmitted through the bite of Ixodes ticks.
- Treponema pallidum is the causative agent of syphilis, primarily transmitted through direct contact with an individual with an active syphilitic lesion.
- Mycoplasma pneumoniae is a bacteria that causes primary atypical pneumonia, commonly known as "walking pneumonia."
- Mycoplasma hominis is an opportunistic pathogen that causes urogenital tract diseases.
- Rickettsia species are obligate intracellular pathogens that spread through arthropod vectors.
- Rickettsia rickettsii causes Rocky Mountain Spotted Fever, with severe symptoms and a mortality rate of 20% if left untreated.
- Rickettsia typhi causes endemic typhus transmitted by rat fleas, while epidemic louse-borne typhus is caused by another Rickettsia species.
Test your knowledge of bacterial pathogens with this quiz! Learn about the causative agents of diseases like bubonic plague, cholera, pneumonia, and more. Challenge yourself to identify the bacteria responsible for various infections and their transmission methods.
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