<p>Does anyone know how good colleges and universities keep their schools bacteria free?</p>
<p>There is no such thing as bacteria free. Not even in a surgical suite.</p>
<p>They require the meningitis vaccine, as well as other immunizations. My D’s school has Purell stations in the dining halls and restrooms.</p>
<p>Humans walk around in a perpetual cloud of millions and millions of bacteria. Same is true of other animals. The earth is awash in bacteria. The closest bacteria-free space of any size in on the moon.</p>