Common Pathogens and Infections

Study Notes

Bacterial Pathogens and Infections

Clostridioides difficile: Primarily found in the colon, responsible for colitis and diarrhea, particularly after antibiotic use.
Escherichia coli: Also resides in the colon, commonly causes gastroenteritis and urinary tract infections, with some strains leading to severe complications.
Staphylococcus aureus: Commonly located on the skin, hair, and nasal passages, associated with a variety of infections including:
- Wound infections: Complications from cuts or surgeries.
- Pneumonia: Can lead to severe respiratory issues.
- Food poisoning: Produces toxins in contaminated food.
- Cellulitis: Skin infection leading to inflammation and redness.
- Bacteremia: Presence of bacteria in the bloodstream, causing severe systemic effects.
- Meningitis: Infection of the protective membranes covering the brain.
- Osteomyelitis: Infection in the bone.
- Septic arthritis: Infection of the joints.
Streptococcus (B-hemolytic group A): Found in the oropharynx, skin, and perianal area, linked to:
- "Strep throat": Common throat infection in children.
- Rheumatic fever: A serious complication affecting the heart.
- Scarlet fever: Characterized by a rash, often follows strep throat.
- Impetigo: Contagious skin infection leading to sores.
- Wound infections: Complicates healing processes.
- Glomerulonephritis: Kidney inflammation after infection.
Streptococcus (B-hemolytic group B): Typically located in the adult genitalia, associated with:
- Urinary tract infections: Common in both men and women.
- Wound infections: Increased risk postpartum and in patients with diabetes.
- Postpartum infections: Can pose risks in new mothers, leading to complications.

Description

This quiz explores various common pathogens and their associated major infections. It covers bacteria such as Clostridioides difficile and Escherichia coli, highlighting their reservoirs and the illnesses they can cause. Test your knowledge on microbiology and infectious diseases.