White spot syndrome is a viral infection of Penaeus monodon shrimp. It is highly lethal, contagious and killing shrimps and doesn’t have a specific anti-viral treatment for this infection. This important infection affects on shrimp farms in Sri Lanka and leads to the loss of economy. Most of shrimp products are export oriented. Therefore this study aimed to determine the factors, detection and prevalence of WSSV in shrimp farms, Sri Lanka. The prevalence rate of WSSV among the collected samples (n = 100) is 58.05% (2011), 59.06% (2012) in Sri Lanka respectively. Therefore the infection and resistance of virus has increased among the shrimp population annually. Further studies need to be identified the WSSV aggressive viral strains and prevention strategies to evade from this sever infection in shrimp farming.
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