Final answer:
True, impetigo is indeed most likely caused by both Group A beta-hemolytic streptococcal (GABHS) and Staphylococcus aureus. Both bacteria can be responsible for the infection either individually or as co-infecting agents. Effective treatment with antibiotics, such as ß-lactams, is crucial to prevent further complications.
Step-by-step explanation:
True or False: Impetigo is most likely caused by Group A beta-hemolytic streptococcal (GABHS) and Staphylococcus aureus. The statement is true. Impetigo is a common skin infection, especially in children, caused by both Streptococcus pyogenes (Group A strep, or GABHS) and Staphylococcus aureus (staph). These bacterial pathogens can cause impetigo individually or as a co-infection.
Streptococcus pyogenes, a part of the Lancefield Group A ß-hemolytic streptococci, is a well-known pyogenic bacterium leading to pus-producing infections such as strep throat, skin infections including impetigo, and more severe diseases like necrotizing fasciitis. Staphylococcus aureus is another major culprit, contributing to community and hospital-acquired infections, with numerous individuals being asymptomatic carriers that can spread disease.
Impetigo is highly contagious and is characterized by its classic appearance, which assists in the diagnosis. Treatment typically involves the use of topical or oral antibiotics, with most ß-lactams being effective against S. pyogenes.
Infections caused by S. pyogenes can have serious repercussions, such as acute glomerulonephritis, if not properly treated. With over 80 strains of Group A strep identified, variability in their M proteins contributes to their differing impacts on human health. Correct diagnosis and timely treatment are essential in preventing the spread of impetigo and complications associated with it.