Two government labs had detected an exotic virus that causes PRRS in 57 of the 64 samples taken from dead pigs. Since March, 3,806 pigs have died of the epidemic in the state.
The Department of Animal Husbandry, Dairying and Fisheries has directed the state to stop distribution of pigs and piglets. It has also told the state to test all healthy pigs to check for infection. It also advised that any pigs brought into the state should test negative for the virus.
The centre also called for a halt in the inter-state movement of pigs from affected to non-affected areas. The epidemic has been detected in six of eight districts in the Mizoram.
The Centre's directive has been marked to all animal husbandry departments of northeast states. The Krishi Bhavan will also inform the Paris-based World Organization for Animal Health.
The virus is believed to have entered Mizoram from neighbouring Myanmar since PRRS has been detected all along highways that lead west-ward from the international border in Champhai district. Only two western districts have not been affected by the virus.
A senior official said a date for mass-culling will soon be decided, but worried the action may lead to heavy economic losses. The state's animal husbandry secretary and director had both been summoned to Delhi for a meeting at Krishi Bhavan on Tuesday to discuss how to contain and eliminate the virus.