To date, HLS has not been correlated with any
disease condition in broilers. The incidence has
been reported to vary between 0 and 100%
among flocks of broilers with no known
relationship to plant shift, bird size, evisceration
line speed, etc. Even with special care in
catching and hanging, the condition still
appeared. A number of studies have been
conducted and in most cases, processing plant
has been eliminated as the major cause of the
problem. Sample flocks processed in
commercial and in research facilities gave
similar incidence of the problem.