Alternaria Growth Regions in the USA

Alternaria, a common allergen, is a type of mold that grows in many parts of the United States. The growth regions are spread across the country and encompass various environments and climates.

In the South

• Humid Areas: Alternaria thrives in the humid environments found in states like Florida, Louisiana, and Texas.

In the Midwest

• Agricultural Areas: Alternaria often grows on crops and in grain storage areas, making it common in farming states such as Kansas, Iowa, and Nebraska.

In the Northwest

• Wet Climates: Alternaria is commonly found in damp conditions, often in the Pacific Northwest, including states like Washington and Oregon.

In the East

• Various Climates: The East Coast offers a range of climates, contributing to the growth of Alternaria in states from Florida to Maine.

In summary, Alternaria can be found in various climates and environments across the United States, from humid southern states to damp northwest regions, and agricultural Midwestern areas to the varied climates of the East Coast.

For individuals with an Alternaria allergy, certain foods known to contain or potentially cross-react with the Alternaria alternata mold may trigger or exacerbate allergy symptoms. Here's a list of some foods you might want to avoid:

Foods Containing Alternaria Alternata Mold

• Mushrooms: Since mushrooms are a type of fungus, they may carry small amounts of the Alternaria alternata mold.
• Rotten fruits and vegetables: The Alternaria alternata spores may be more commonly present in stored fruits and vegetables, especially those that have started decaying. Specifically, products like tomatoes, apples, and citrus fruits can be high in this mold.

Foods with Potential Cross-Reactivity

• Melon and watermelon: Some people with Alternaria allergy might find their symptoms worsen after eating these fruits.
• Potatoes: This commonly eaten vegetable might also trigger symptoms.
• Bananas: In some cases, people have reported worsening of Alternaria allergy symptoms with bananas.

Despite the list above, it’s important to note that different people can react differently to various foods. Keep track of the food that appear to worsen your allergy symptoms, and discuss your observations with your healthcare provider. Always seek personalized advice from a qualified health professional.