DQ: Prevalence of methicillin-resistant
DQ: Prevalence of methicillin-resistant Staphylococcus aureus
1. You are interested in obtaining Staphylococcus aureus for a
study investigating the prevalence of methicillin-resistant
Staphylococcus aureus in the general population. You have
received several samples and are ready to start your isolation
procedures. Describe the personal protective equipment that
would be needed and three different culturing techniques that
can be used to obtain organisms to produce pure cultures. Would
you use general or selective media and tell me which specific
media you would choose. How would you determine if the culture
was contaminated? What is the first step you would take if you
detected contamination? (see textbook Chapter 3- not listing the
plating/staining techniques or medias, you need to).
2. Explain the different stages of syphilis. (Terminology/topics to
include: causative organism (morphology, gram-stain reaction),
mode of transmission, chancre, gumma, symptoms, likelihood of
infection, treatment options at different stages, damage that can
occur during different stages, prevention methods).
3. List three protozoan infections of the circulatory system that are
transmitted by arthropods. Include the disease name, specific
organism (genus species), vector that is the intermediate between
hosts, and disease progress in humans.