Viruses live on doorknobs and phones and can get you sick – smart cleaning and good habits can help protect you
- Written by Joseph Eisenberg, Professor and Chair of Epidemiology, University of Michigan
Disinfecting an area takes time and effort. And there is only so much you can do. AP Photo/Seth Wenig
One vomiting episode from someone infected with norovirus emits billions and billions of individual viruses. That’s enough to fuel an outbreak – and is exactly what happened in an elementary school in Seattle, Washington a few months ago...

