What Is Immunocompromised
Immunocompromised means your immune system cannot fight off infections as effectively as a healthy immune system can. This includes infections caused by mold exposure. People with weakened immunity are at higher risk for serious respiratory infections, allergic reactions, and fungal infections when exposed to mold spores in their homes or workplaces.
Common causes of immunocompromise include HIV/AIDS, cancer treatment, organ transplants, long-term corticosteroid use, and certain autoimmune diseases. Age matters too: people over 65 and infants under 2 years old have naturally weaker immune responses. These groups need stronger protections against mold than the general population.
Mold Exposure and Immunocompromised Individuals
If you are immunocompromised, mold exposure poses genuine health risks beyond what healthy people experience. Studies show immunocompromised individuals can develop infections from mold species that typically cause only minor allergic reactions in others. Aspergillosis, a serious lung infection from Aspergillus mold, affects immunocompromised people at rates 10 to 20 times higher than the general population.
The EPA and CDC recommend that immunocompromised household members avoid areas with visible mold growth during remediation work. If you fall into this category, you should leave the property during professional mold remediation, which typically involves containment, removal, and moisture control measures.
Inspection and Testing Protocols
If someone in your home is immunocompromised, mold testing becomes more critical. Professional inspectors should conduct air quality testing and surface sampling to identify mold species present. Lab results specify the types of mold, which helps determine health risks. Some molds like Stachybotrys and Aspergillus are more concerning for immunocompromised individuals than others like Cladosporium.
During inspection, prioritize areas with moisture problems. According to EPA guidelines, mold grows wherever indoor humidity exceeds 50% for extended periods. Common problem areas include bathrooms, basements, crawl spaces, and around windows. Moisture control is the foundation of mold prevention for households with immunocompromised members.
Remediation and Prevention
- Remove all mold-contaminated materials if possible. IICRC standards recommend removing porous materials (drywall, insulation, carpet) affected by mold larger than 10 square feet.
- Keep indoor humidity between 30% and 50% using dehumidifiers, exhaust fans, and air conditioning.
- Fix plumbing leaks immediately. Water damage left untreated becomes mold within 24 to 48 hours.
- Use HEPA filtration in HVAC systems. These filters remove 99.97% of particles 0.3 microns or larger.
- Ensure immunocompromised household members stay in a mold-free zone during remediation work.
Common Questions
- Can immunocompromised people live in homes being treated for mold? No. During active remediation, immunocompromised individuals should stay elsewhere for the duration of the project, typically 3 to 7 days depending on the scope of contamination.
- What type of mold testing matters most for immunocompromised households? Air quality testing (spore counts) combined with surface sampling identifies both active mold and spore levels. Lab identification of species is important because certain molds pose greater risks to compromised immunity.
- Does homeowners insurance cover mold remediation? Most standard policies exclude mold damage unless it results from a covered water event. Check your specific policy and consider discussing additional coverage if someone in your home is immunocompromised.