Comment Re:Something not right (Score 3, Interesting) 63
Hospitals and nursing homes are places where sick or frail people are concentrated, thus creating an environment in which community-acquired infections spread very easily and rapidly. Standard disinfection procedures can only go so far; we can see this by comparing it to, say, isolation protocols to prevent exposure to highly infectious BSL-4 pathogens such as ebolavirus. In such cases, healthcare workers must wear a positive pressure personnel suit, and building construction and ventilation must be designed to ensure the airflow does not contaminate clean areas.
What this tells us is that, even with diligent cleaning and disinfection in a hospital setting, pathogens remain around us. Fungal spores are omnipresent--they are hardy, microscopic, and airborne. The reason why we aren't all dropping dead is because our immune systems prevent these pathogens from gaining a foothold. But when a pathogen is extremely virulent, hardy, and able to escape the immune response, that is when we have a problem. And concentrating the most vulnerable of us in one place is how they pop up. That's not to say that hospitals and nursing homes can't do better--of course, they can and should. But from the administrator's perspective, it's a matter of cost/benefit ratio, and that's why many (or even most) institutions have substandard practices for infection control.