Causes of aspergillosis

Aspergillosis is caused by breathing in small particles of a mould called aspergillus.

In most healthy people,the immune system isable to quickly destroy the mould before it causes any problems. However, symptoms can develop in people with a pre-existing lung condition or a weak immune system.

Aspergillosis isn't contagious, so it can't be passed from person to person.

Aspergillus mould

Aspergillus mould is found in all countries and in many different environments. This makes itdifficult to avoid.

Aspergillus mould can be found in:

• rotting leaves and compost
• plants, trees and crops
• air conditioning and heating systems
• insulation material
• carpets
• pillows and bedding
• dust
• ground pepper and spices

Who's most at risk?

Aspergillus cancause aspergillosisif you have a health problemaffecting yourlungs, or your immune system is weak.

You may be at risk of aspergillosis if you have:

• Asthma a common long-term condition that can cause coughing, wheezing, chest tightness and breathlessness
• cystic fibrosis a condition in which the lungs and digestive system become clogged with thick, sticky mucus
• chronic obstructive pulmonary disease (COPD) a group of lung conditions that affect breathing
• tuberculosis (TB) a bacterial infection thatmainly affects the lungs
• sarcoidosis where small patches of swollen tissue develop in the lungs
• HIV or AIDS conditions in which the immune system is weakened
• current or recent cancer treatment including radiotherapy and chemotherapy
• an organ transplant as you'll need to take medication that weakens your immune system

If you'reat risk, you may need to take extra precautions to prevent aspergillosis for example,bywearing a face mask near dusty environments,avoiding activities such as gardening, or taking long-term antifungal medication .

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