Which common bacteria is known to cause infections in patients?

Staphylococcus aureus is a common bacterium that is notably responsible for a range of infections in patients. This bacterium can cause skin infections, respiratory infections, and more severe conditions, such as pneumonia and bloodstream infections. It is particularly well-known for leading to both localized infections, like boils and cellulitis, and systemic infections, such as sepsis.

The virulence of Staphylococcus aureus stems from its capability to produce a variety of toxins and enzymes that assist in evading the immune response and promoting infection. Moreover, some strains, like Methicillin-resistant Staphylococcus aureus (MRSA), have developed resistance to common antibiotics, complicating treatment protocols.

Other bacteria like Escherichia coli and Streptococcus pneumoniae also cause infections, but Staphylococcus aureus is often highlighted in clinical settings due to its prevalence and the severity of the infections it can cause. Additionally, Salmonella enterica relates more to gastrointestinal infections rather than the wide array of infections associated with Staphylococcus aureus.