Who Can Get Mycobacteria Avium Complex (MAC)?

People who have weakened immune systems, such as those with HIV/AIDS or transplant recipients, are more likely to get infections from MAC. Others at risk include:

* People with chronic lung disease, such as COPD or cystic fibrosis

* Smokers

* People who are underweight

* People who have diabetes

* People who are taking certain medications, such as corticosteroids or chemotherapy

* Elderly people

MAC can also be spread through unpasteurized milk or other dairy products.