Mold (mildew), mushrooms, and yeast are all types of fungi. Fungi are found both indoors and outdoors. Hundreds of different kinds of mold are commonly found in the United States and New York City.
Exposure to mold can cause or worsen asthma symptoms and allergies, such as hay fever. People who are allergic or sensitive to mold may experience congestion, runny nose, coughing and trouble breathing.
Some people are at risk for more severe reactions to mold, such as fever and shortness of breath. This includes people who are exposed to large amounts of mold at work such as, agricultural workers and building demolition workers. People who have had or are undergoing certain medical procedures, such as bone marrow or organ transplants and chemotherapy, are also at risk. Health symptoms usually disappear after the mold has been removed.