Florida Basic Recruit Training Program High Liability (First Aid) Practice Exam

Which of the following is a highly contagious bacteria resistant to certain antibiotics?

1. Escherichia coli

2. Streptococcus pneumoniae

3. Methicillin-Resistant Staphylococcus Aureus

4. Clostridium difficile

The correct answer is: Methicillin-Resistant Staphylococcus Aureus

The choice of Methicillin-Resistant Staphylococcus Aureus (MRSA) as the correct answer is appropriate due to its well-documented status as a highly contagious bacterial infection that exhibits resistance to methicillin and other commonly used antibiotics. MRSA can lead to a range of infections, from minor skin infections to more severe conditions such as pneumonia and bloodstream infections. What makes MRSA particularly concerning is its ability to spread easily in community settings and healthcare environments, especially among individuals with weakened immune systems or open wounds. The resistance to methicillin and other beta-lactam antibiotics complicates treatment options, making it more challenging to manage these infections effectively. In contrast, the other bacteria listed do not directly align with the criteria outlined in the question concerning high contagiousness and antibiotic resistance in the same context as MRSA. While Escherichia coli and Clostridium difficile can cause serious infections, particularly in specific settings, they are not classified as highly contagious in the same manner as MRSA. Streptococcus pneumoniae can be contagious but is typically susceptible to several antibiotics, despite some strains showing resistance to penicillin. Thus, MRSA stands out for its high contagion potential combined with significant antibiotic resistance, making it the best choice in this