Indoor air quality and mold health risks

Experts and medical professionals are highlighting the health and property risks associated with mold growth, poor ventilation, and high humidity levels in residential settings.

Initial warnings focused on seasonal transitions, noting that falling leaves and decaying organic matter can increase outdoor spore levels. Homeowners were advised to maintain humidity between 30 per cent and 50 per cent and ensure proper ventilation to protect property integrity and prevent respiratory issues.

Subsequent guidance expanded on the specific medical dangers of stagnant air. Medical experts, including Dr. Nguyen Thi Bich Uyen from Le Van Viet Hospital, warned that sealing homes during rainy weather can allow biological and chemical pollutants like bacteria, viruses, and fungi to accumulate. Such environments can exacerbate asthma, allergies, and chronic obstructive pulmonary disease (COPD), while also placing strain on cardiovascular health by hindering the body’s ability to regulate temperature.

Recent guidance regarding the autumn transition notes that thermal contrasts between indoor warmth and cold exterior walls can cause condensation near windows, corners, and thermal bridges. This moisture allows fungal spores to germinate, posing risks to children, the elderly, and asthmatics. To manage hygiene, specialist Matteo Fadenti recommends cleaning summer storage items like duvets and coats, using disinfectants if mold is present. He also advises cleaning frequently touched surfaces, such as remote controls and light switches, by first removing grease and dirt before disinfection.