What is the cause of common mold allergies?

• Correct Answer: viruses
• immobile mold spores
• bacteria
• airborne mold spores

Explanation: Mold allergies are very common. They are caused by airborne mold spores. When the spores enter the respiratory tract, the immune system responds to them as though they were harmful microbes. Symptoms may include sneezing, coughing, and difficulty breathing. The symptoms are likely to be more severe in people with asthma or other respiratory diseases. Long-term exposure to mold spores may also weaken the immune system.

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