Following intelligence reports that African swine fever has spread to most pigs in North Korea, its southern neighbour has offered to cooperate on quarantine efforts, fearful that the virus could spread to its own herds.
But that call has so far been met with silence, and the government in Seoul says it is struggling to get information from Pyongyang.
In September South Korea reported its first case of the virus, leading to a pig cull.
Al Jazeera's Wayne Hay reports from Ganghwa Island, South Korea.
