Identify the type of specimen often cultured to detect Enterobacteriaceae infections.

• A. Cervical swabs
• B. Urine, stools, or blood specimens
• C. Saliva samples
• D. Sputum samples

Answer: (B)

Urine, stools, or blood specimens are commonly cultured to detect Enterobacteriaceae infections because this family of bacteria is frequently associated with a variety of infections, particularly those affecting the urinary and gastrointestinal tracts, as well as bloodstream infections.

In urinary tract infections, Enterobacteriaceae such as Escherichia coli are the most prevalent pathogens, making urine cultures critical for diagnosis and treatment. Similarly, stool samples are essential for identifying Enterobacteriaceae that cause gastrointestinal illnesses, such as Salmonella, Shigella, and certain strains of E. coli. Blood cultures are also vital because Enterobacteriaceae can enter the bloodstream, leading to serious infections like sepsis.

Other specimen types, such as cervical swabs or saliva samples, are less commonly associated with Enterobacteriaceae infections, as these samples are typically used for detecting other pathogens or conditions unrelated to this bacterial family. Sputum samples, while important for diagnosing respiratory infections, are generally not the primary specimens for Enterobacteriaceae, as they are not typically found in the respiratory tract.