Limited access to farm, foot baths and tire baths, and hand
disinfection was strictly implemented by farm management. These
measures concern humans as carriers. But the question is whether
human can really carry WSSV particles that could infect the cultured shrimp? This question is not just anecdotic; no scientific evidence
proves that humans can transmit WSSV or particles carrying WSSV,
although Corsin et al. (2005) found that sharing of personnel between
ponds is associated with WSSV. Stocking of WSSV negative fry could
prevent the entry of WSSV into the culture system, but shrimp once
inside the pond can be infected in several ways.