A range of commercial immunostimulants derived from microorganisms claim to boost the innate defense mechanisms and have broad-spectrum positive effects in shrimp.
The principle of vaccination is based on two key elements of immunity: specificity and memory. Shrimp lack the appropriate cells and pathways to respond to specific pathogens and the long-term “memory” to deal with recurring infections.
In a study, results showed that raising water temperature to 33 degrees-C after inoculation was sufficient to prevent shrimp mortality from WSSV.
Using intramuscular injection of white spot syndrome virus, study determines number of viral particles associated with the infectious dose.
New antibody-based diagnostic kits for aquaculture disease diagnosis are simple and fast, and high-sensitivity PCR testing is coming to the field, as well.