ENDOGENOUS ANAEROBES COMMONLY INVOLVED IN HUMAN INFECTION

Question 1

Actinomyces israelii, other Actinomyces spp.

Answer 1

Actinomycosis

Question 2

Clostridioides (Clostridium) difficile

Answer 2

Antibiotic-associated diarrhea;
* Pseudomembranous colitis

Question 3

Bacteroides fragilis group, fusobacteria, clostridia,
peptostreptococci

Answer 3

Bacteremia

Question 4

Bacteroides spp., Prevotella spp., Porphyromonas spp.,
Fusobacterium spp., Clostridium spp. (these infections are
often polymicrobial)

Answer 4

Brain abscess

Question 5

Peptostreptococci, Bacteroides spp., Clostridium spp.,
Prevotella bivia, Prevotella disiens, Actinomyces israelii
(IUD associated)

Answer 5

Infections of the female genitourinary tract

Question 6

B. fragilis group, other Bacteroides spp., Fusobacterium
spp., Clostridium perfringens, other
Clostridium spp., peptostreptococci (frequently
polymicrobial)

Answer 6

Intraabdominal infections, liver abscess, peritonitis,
perineal and perirectal infections

Question 7

C. perfringens, Clostridium novyi, Clostridium septicum
(80%–95% of the cases)

Answer 7

Myonecrosis

Question 8

Peptostreptococci, Porphyromonas spp., Fusobacterium
spp. (often polymicrobial)

Answer 8

Oral, sinus, dental infections

Question 9

Porphyromonas spp., Fusobacterium nucleatum,
peptostreptococci, B. fragilis group, Actinomyces spp.

Answer 9

Aspiration pneumonia, pleuropulmonary infections