WSSV still continues to plague the shrimp industry, despite the
bulk of information available. Most of this information resulted from
experimental or “laboratory”-based studies relating to transmission
and to the physicochemical properties of the water. Epidemiology is
another approach of understanding a contagious disease. Factors
related to pond location and management practices seem to affect
WSSV epidemiology but these have hardly been investigated. A
survey is appropriate to gather information from a population which
is beyond the control of the investigator on an experimental unit. The
relationship between a disease and the hypothesized causal factors in
a specified population, like between WSSV and farm practices, can be
investigated using a questionnaire in a cross-sectional survey.