TAIPEI (Taiwan News) — Cattle infected with lumpy skin disease (LSD) on the outlying island county of Kinmen are twice as numerous as initially suspected, reports said Saturday (July 11).

On Wednesday (July 8), officials put the number at 23 out of 549 cattle at a government-operated farm, but a countywide inspection identified 50 cows at 12 farms spread across the island’s four main townships, CNA reported.

The infection is thought to have originated in the Chinese province of Fujian and to have been transmitted to Kinmen by mosquitoes or flies. The authorities have installed four mosquito-killing lamps and purchased 11 more sophisticated versions to try and prevent the infections from spreading.

In addition, the animals suspected of having the disease are being culled and the farms disinfected, reports said. As the incubation period lasts 28 days, more cases could emerge soon.

A ban went into effect on the transport of fresh beef and pork from Kinmen to the rest of Taiwan as the county works on relief measures for local farmers, including the production of beef jerky.