In the early part of the 20th century, Serratia marcescens was considered a non-pathogenic organism and was used in medical experiments and as a biological warfare test agent [1]. Since the mid-1970s, however, Serratia species have been recognized to cause a full spectrum of human clinical disease. Additionally, Serratia species may harbor multidrug-resistance mechanisms that can complicate treatment decisions. This article will review the microbiology, epidemiology, clinical features, diagnosis, and treatment of infections caused by Serratia species.
Scar tissue is the formation of fibrosis connective tissue that is created to act as a protective barrier. It replaces healthy tissues that have been damaged due to a number of reasons. Scar tissue generally forms in muscles, tendons, ligaments, fascia, and joints. It is also called an adhesion.
Idiopathic pulmonary fibrosis (IPF) causes scar tissue to grow inside your lungs. Usually, when you breathe in, oxygen moves through tiny air sacs into your bloodstream. From there, it travels to organs in your body. IPF scar tissue is thick, like the scars you get on your skin after a cut. It slows oxygen flow from your lungs to your blood, which can keep your body from working as it should.