The clinical signs associated with the EHP infection in farmed
shrimp are not specific, generally associated with stunted growth
and increased mortality. Based on the data obtained from ponds
in Vietnam (personal communication from shrimp farmers): after
stocking infected postlarvae into the shrimp ponds, the shrimp
grew at a normal rate during the first 25 days, after that,
the shrimp health started to deteriorate; the infected shrimp
exhibited reduction in feed consumption (50–70%) and discolored
hepatopancreas. The growth (i.e. gain in mass, shrimp were