What is a common cause of a rash in a baby in the nursery?

• A. Escherichia coli
• B. Staphylococcus aureus
• C. Streptococcus pneumoniae
• D. Neisseria meningitidis

Answer: (B)

A common cause of a rash in a baby in the nursery is Staphylococcus aureus. This bacterium is known to be associated with various skin infections, particularly in neonates. One of the classic presentations is impetigo, which can manifest as a red, crusty rash. Newborns often have immature immune systems, making them more susceptible to infections, and Staphylococcus aureus can easily colonize the skin or cause infections due to its prevalence in hospital settings.

In contrast, while Escherichia coli is known for causing urinary tract infections and gastrointestinal issues, it is less commonly associated with skin rashes in the nursery setting. Streptococcus pneumoniae is primarily known for causing respiratory infections and meningitis rather than skin manifestations. Neisseria meningitidis is primarily associated with meningitis and sepsis, and while it can cause skin findings such as petechiae or purpura during severe disease, it is not as commonly encountered in circumstantial rashes in the nursery context. Therefore, Staphylococcus aureus stands out as a significant risk factor for rashes in neonates due to its skin-invading properties.