Methicillin-resistant Staphylococcus aureus (MRSA) is a bacterial strain commonly spread in hospitals. If MRSA entered the surgical site of a patient, what is the first level of the immune system it would have to defeat to cause an infection?

Question

Quizplus · Accepted Answer

The first line of defense against any infection, including MRSA, is the innate immune system, which includes physical barriers such as skin and mucous membranes, as well as immune cells such as macrophages and neutrophils. If the bacteria breaches this initial defense, then the adaptive immune response, which includes humoral and cell-mediated immunity, may be activated. There is no involvement of the autoimmune system in fighting infections.

Methicillin-Resistant Staphylococcus Aureus (MRSA) Is a Bacterial Strain Commonly Spread