It might be once a quarter, or as often as every day, depending on the immediate manifestations of the disease and complications.

Swans fly no more than 50km a day. Looking at the way the disease has spread ­ one day it's in Italy, a day later it's in the north of Germany ­ that makes us believe that there are other bird species spreading the disease.

This does underscore the fact that West Nile is a potentially fatal disease.

He's just a big, big part of why we're a successful program. He busts his butt every day. He does whatever we need anytime, anyplace, anywhere. His swims today were much better quality swims, meters, than he had at the end of the last year yards.

The Centers for Disease Control have suggested we aim for 10,000 steps every day to see health benefits, but most Americans only get around 5,000 a day.

Multiple hours a day on any of those activities decelerates communication with the family unit and can foster an escape from reality that, in time, becomes unhealthy.