Question

when the cdc identifies antibiotic - resistant pathogen strains, they recommend switching to a different drug as the standard treatment. but as pathogens develop resistance to multiple drugs, a single antibiotic may not be sufficient. which of the pathogens listed requires a combination of two drugs for effective treatment?
salmonella
n. gonorrhaeae
streptococcus pneumoniae
shigella

Explanation:

Neisseria gonorrhoeae (N. gonorrhoeae) is a bacterium that causes gonorrhea. Due to the development of antibiotic - resistant strains, a combination of two drugs (such as ceftriaxone and azithromycin) is often recommended for effective treatment. Shigella (causes shigellosis), Streptococcus pneumoniae (causes pneumonia, meningitis etc.), and Salmonella (causes salmonellosis) can often be treated with a single antibiotic (though antibiotic - resistance is also a concern for them, but the question is about which requires a combination).

Answer:

N. gonorrhoeae