Conclusion
NPI during the COVID-19 pandemic is a risk factor for indoor and outdoor
allergen sensitization. It was also found that allergen gradeĀ of dust
mite and rates of multiple sensitizations were significantly higher than
those before the COVID-19. To reduce indoor allergen concentrations, we
recommend: (1) Use a dehumidifier, vacuum, air purification, mite
removal instrument, and open windows frequently for ventilation. (2) No
use of carpets and fabric curtains, and regularly wash and replace
mattresses and pillows. (3) Avoid keeping pets. (4) Avoid going out
during pollen season. Wear a mask when going out, and change masks on
time. (5) Avoid allergens based on their age and seasonal
characteristics.