AR/MDROs Home Data Healthcare Safety Home Investigation Reporting
Multidrug-Resistant Acinetobacter (MDR-A)
Organisms, Causative Agent, or Etiologic Agent
The term MDR-A stands for multidrug-resistant Acinetobacter (MDR-A). Acinetobacter species are gram negative bacteria and have more than 25 types or species under its genus name, such as Acinetobacter baumannii. These bacteria can have a built-in resistance factor enabling them to be resistant to the antibiotics called carbapenems and penicillins. There are several ways Acinetobacter can be nonsusceptible to antibiotics, but no matter the mechanisms when an Acinetobacter species carries this resistance we refer to the bacteria as multidrug-resistant Acinetobacter or MDR-A.
Transmission
Acinetobacter species have been found in soil, water, animals and humans. In humans, it has been isolated from the skin, throat and rectum, and has been reported to be a colonizer of the respiratory tract in health care settings. Being a carrier of a bacterium without any symptoms or infection is known as being “colonized”. The germ is spread through contact. This contact can be either direct person-to-person contact or secondary contact with contaminated environmental surfaces, medical devices, or equipment. For example, a healthcare worker may touch an infected person or soiled equipment and not clean their hands before touching the next patient or patient equipment.
Symptoms
Acinetobacter can cause many types of infections, such as pneumonia, urinary tract infections, and bloodstream infections. When the same infection is caused by MDR-A the infections are harder to treat because the bacteria are very resistant to antibiotics. An individual can also be a colonized with Acinetobacter and have no symptoms.
Prevention
Generally, MDR-A affects people with underlying medical problems such as diabetes or a weakened immune system and rarely occurs outside of health care facilities. There are many prevention measures you can put in place early on to help lessen your chance of getting MDR-A.
School Exclusion
MDR-A infections are rare in children. Unless directed by a physician, students with any type of MDR-A wound infection need to be excluded from attending school until drainage from wound or skin and soft tissue infection is contained and maintained in a clean, dry bandage. Restrict a child from activity that could result in the infected area being touched by others or becoming exposed, wet, soiled, or otherwise compromised.
Texas Trends
Multidrug-resistant Acinetobacter (MDR-A) has been found in Texas. The prevalence of MDR-A is currently unknown. Based on the 2012 Texas Annual Report on Health care-associated Infections Overall Antibiogram, antibiotic sensitivity for Acinetobacter baumannii ranged from 36% susceptible (Imipenem) to 70% Tetracycline.
