More than 200 Knoxville birds have tested positive for Spring Fever. Although the source of the problem cannot be proven, it is believed that the recent cold snap is to blame. Experts warn that the owners of the birds will have to cull the entire flocks, or let the birds go outside to play a bit. The decision on how to handle these infected birds has not yet been made, but it’s clear that something must be done before Spring Fever makes the jump from bird to human. Spring Fever this early in the year, before the body creates any natural resistance, could destroy local worker productivity.