Another important hospital infection isClostridium difficile(C.diff). This bacterium is the most common cause of debilitating diarrhoea in the hospital setting. It's also an important cause of illness and death in care homes (around 80% ofC.diffinfections occur in people over 65).The infection spreads when people touch an infected person or a contaminated surface like a bedpan, toilet or floor. ButC. diffalso forms spores and research in a UK hospital, carried out by scientists in Yorkshire, showed the presence of the spores in the air. This was a preliminary study but the researchers wondered whether the possibility of airborne transmission might explain whyC.diffcan be hard to eradicate. A more recent paper foundC.diffin the air around seven out of ten infected patients. Maybe infection control in hospitals and care homes have to look more closely at improved air purification. Air filtration integrated into HVAC systems is often always enough because the filtration efficiency that some of these air filtration systems can reach is often many times less than freestanding air cleaners. Proper hygiene standards in regard to airborne infection control will not only help infection control of aspergillosis but might also reduce the rate of PseudomonasandC.diffrelated hospital infections.
Since the emergence of Covid-19 and global efforts to minimise the spread of infection throughout populations, there has been a renewed focus on determining what measures can be adopted to mitigate the risk of airborne transmission of respiratory viruses, including Covid-19, in a range of close proximity indoor settings.
In light of the growing crisis, hospitals in Wuhan are using IQAir air filtration systems to help prevent and contain the spread of the deadly virus. This follows their successful efforts in 2003 where over 150 hospitals in Hong Kong were fitted with IQAir units to prevent the spread of the SARS coronavirus.
Here we explore the benefits of adopting air filtration and purification systems in school classrooms, alongside currently recommended measures such as social distancing, hand washing and face mask use. These provide protection against Covid-19 and improve indoor air quality more broadly.