A) List three bacteria that frequently cause health care-associated infection. B) Which patients are at highest risk for acquiring a health care-associated infection? {Ans: Methicillin-resistant S. aureus (MRSA), vancomycin-resistant enterococci (VRE), and penicillin-resistant Streptococcus pneumoniae Geriatric are 2-3x more likely to acquire a HAI compared to the adult population d/t co-morbidities, risk for infection & atypical presentation (cog/beh changes, acute inability to perform daily activities, lower core temp)}Tetracyclines uses {Ans: Bacteriostatic Broad-spectrum antibiotics Increasing bacterial resistance has emerged -Rarely considered as first-line treatment Uses: Mycoplasma pneumoniae Lyme disease Anthrax Helicobacter pylori Acne (topical) Periodontal disease}hich organism most commonly causes cystitis? 1 Escherichia coli 2 Aspergillus niger 3 Staphylococcus aureus 4 Streptococcus pneumonia {Ans: 1 The majority (more than 80%) of uncomplicated, community-associated urinary tract infections (UTIs) are caused by Escherichia coli. Rarely, other gram-negative bacilli—Klebsiella pneumoniae, Enterobacter, Proteus, Providencia, and Pseudomonas—are the cause. Gram-positive cocci, especially Staphylococcus saprophyticus, account for 10% to 15% of community-associated infections. Hospital-associated UTIs are frequently caused by Klebsiella, Proteus, Enterobacter, Pseudomonas, staphylococci, and enterococci; E. coli is responsible for less than 50% of these infections. Although most UTIs involve only one organism, infection with multiple organisms may occur, especially in patients with