What Organism is the Most Common Cause of Community-Acquired Bacteremia

Question

What organism is the most common cause of community-acquired bacteremia?
A) Pseudomonas aeruginosa
B) Staphylococcus aureus
C) Streptococcus pneumoniae
D) E. coli

Accepted Answer

Streptococcus pneumoniae is the most common cause of community-acquired bacteremia, accounting for about 35-50% of cases. Pseudomonas aeruginosa is more commonly associated with hospital-acquired infections, while Staphylococcus aureus and E. coli are also common causes of bacteremia but are not as prevalent as Streptococcus pneumoniae in community-acquired cases.