Nipah virus was initially discovered when it caused an outbreak of brain fever among pig farmers in Malaysia. Q : Should I be worried ? A : A little. As it is transmitted from person to person and there is no effective antiviral therapy for this infection . Q : Who is at high risk ? How is it transmitted ? People working with pigs and consuming pigs.Farmers who come in contact with bats.Consuming Fruits which are already bitten by bat.Contact with people who already have Nipah virus infection.