The eradication came at a cost of US$4.5 million (equivalent to $ million in ). A 1924 outbreak in California resulted not only in the slaughter of 109,000 farm animals, but also 22,000 deer. The US had its latest FMD outbreak in Montebello, California, in 1929. This outbreak originated in hogs that had eaten infected meat scraps from a tourist steamship that had stocked meat in Argentina. Over 3,600 animals were slaughtered and the disease was contained in less than a month. Mexico–U.S. border (1947) On December 26, 1946, the United States and Mexico jointly declared that FMD had been found in Mexico. Initially, proposals from Texans were for an animal-proof wall, to prevent animals from crossing the border and spreading the disease, but the two countries eventually managed to cooperate in a bilateral effort and eradicated the disease without building a wall. To prevent tension between ranchers and the veterinarians, public broadcasts over the radio and with speakers on trucks were used to inform Mexican ranchers why the U.S. veterinarians were working on their livestock. Ranchers who lost cattle due to being culled by the vets would receive financial compensation. However, the tension remained and resulted in clashes between local citizens and the military-protected U.S. veterinarians. These teams of veterinarians worked from outside the infection zone of the disease and worked their way to the heart of the epidemic. Over 60,000,000 injections were administered to livestock by the end of 1950. United Kingdom (1967) In October 1967, a farmer in Shropshire reported a lame sow, which was later diagnosed with FMD. The source was believed to be remains of legally imported infected lamb from Argentina and Chile. The virus spread, and in total, 442,000 animals were slaughtered and the outbreak had an estimated cost of £370 million (equivalent to £ billion in ). Taiwan (1997) Taiwan had previous epidemics of FMD in 1913–14 and 1924–29, but had since been spared, and considered itself free of FMD as late as in the 1990s. On the 19th of March 1997, a sow at a farm in Hsinchu, Taiwan, was diagnosed with a strain of FMD that only infects swine. Mortality was high, nearing 100% in the infected herd. The cause of the epidemic was not determined, but the farm was near a port city known for its pig-smuggling industry and illegal slaughterhouses. Smuggled swine or contaminated meat are thus likely sources