Microbiology 200

Assignment 9

Wound Infections

Biology 200 (Microbiology), on line, CRN….

Dr. I. Iliev

I. LEARNING OBJECTIVE

One of the most common bacterial infection on wounds are Group A Streptococcal infections. Describefor “Flesh-Eating disease” also known as Necrotizing Fasciitis the following:

Sign and Symptoms -

Incubation Period -

Causative Agent -

Pathogenesis -

Epidemiology -

Treatment -

Prevention–

The following disease is due to anaerobic condition. Describe the conditions that lead to the development of anaerobic wound infection. Key word: “Lockjaw”. Name the disease and provide to your best knowledge the following information:

Sign and Symptoms –

Incubation Period -

Causative Agent –

Pathogenesis -

Epidemiology -

Treatment –

Prevention–

II. CASE STUDY:

Human bite infections can be dangerous because some of normal mouth microbiota, not invasive when are growing alone, suddenly can invade and destroy tissue when growing together with Pasteurella orBartonella microbes (usually that comes from animal bites). It cause high fever and rash. Questions:

1. What Gram-negative organism commonly infects wounds caused by animal bites?

2. What is the most common cause of chronic localized lymph node enlargement in young children?

3. Why are members of the normal mouth microbiota a cause of serious infection in human bite?

III. CRITICAL THINKING AND APPLICATIONS:

An army field nurse, working in a mobile hospital ask all the time the ambulance EMT and driver: “Was the soldier wounded in a field of animals, cows, etc.?” Why the nurse is asking this question?