Microbiology

Exotoxins

Exotoxin Overview Exotoxins are proteins released by both Gram-positive and Gram-negative bacteria certain Gram-positive and

CNS Infections: Protozoa

Snapshot A 56-year-old nurse is brought to the emergency room for altered mental status.

Roundworms (Nematodes)

Snapshot A 5-year-old boy is brought to his pediatrician for abnormal scratching behavior. His

Staphylococcus aureus

Introduction Classification gram-positive cocci in clusters  Microbiology properties facultative anaerobes catalase positive neutralizes its

Escherichia coli

Snapshot A 76-year-old woman presents to the emergency department for altered mental status. She

Parvovirus B19

Snapshot A 25-year-old woman presents to the emergency room for painful joints. She has

Clostridium tetani

Snapshot A 20-year-old college student presents to the emergency room after stepping on a

Systemic Mycoses

Snapshot A 35-year-old woman presents to her primary care physician for a 2-week history

Streptococcus pneumoniae

Snapshot A 56-year-old man presents to the emergency department for a severe headache, generalized