A suspected case of foot and mouth disease is being investigated in Norfolk, officials have said.
The farm has brought in movement restrictions and a 10km temporary control zone for animals.
The Animal and Plant Health Agency wrote on Twitter: “We are currently investigating a suspected case of Foot and Mouth in Norfolk.
“Movement restrictions and a 10km temporary control zone are in place on the farm.
“Preliminary testing does not indicate the presence of disease, but further work is now underway to fully rule it out.”
Foot and mouth disease (FMD) is a severe, highly contagious viral disease of livestock that affects cattle, swine, sheep, goats, and other cloven-hoofed animals.
The Department for Environment, Food and Rural Affairs added: “Following suspicion of vesicular disease in pigs, and as a precaution to prevent the spread of disease, a 10km Temporary Control Zone has been declared around premises near Feltwell, Norfolk.
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“The premises remains under restriction pending the outcome of official tests.”
Chief veterinary officer Christine Middlemiss also said on Twitter that more work is still being carried out.
She said: “Preliminary testing does not indicate the presence of disease and further work is under way to fully rule it out.”
FMD is not a public health risk and is not readily transmissible to humans, according to the World Organisation for Animal Health.
The last UK outbreak was in 2007, but a particularly severe outbreak occurred in 2001.
This resulted in the slaughter of more than six million animals.