A recent study conducted by the researchers from the University of Manchester and Manchester University NHS Foundation Trust (MFT) found that levels of Aspergillus fumigatus increase significantly during summer. The research team said that the increased temperatures and lower wind speeds of summer possibly create this situation. Notably, the researchers  pointed out, there is a need for safe ventilation in the rooms of COPD patients as rooms with outside-facing windows had elevated levels of fungus in them. Medical experts highlighted the importance of the study for COPD patients and how even a simple open window could determine the severity of allergic reactions.