Spain has reported case of atypical bovine spongiform encephalopathy (BSE) on a farm in the Castile and Leon region, the Paris-based World Organisation for Animal Health (OIE) said on Monday.

The atypical type H form of BSE, or mad cow disease, was detected in a cow on a farm in district of El Sahugo, near the Portuguese border, the OIE said, citing a report from the Spanish agriculture ministry.

Spain also reported a case of atypical BSE in Castile y Leon in March this year.

Widespread cases of mad cow disease hit cattle herds in Britain and other European countries in the 1990s. So-called atypical cases have occasionally been detected in recent years and can lead to temporary trade restrictions.