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Show Saves Hogs A new vaccine developed by industrial research is said .lo give pigs an immunity to ho3 cnolera, whia4 now costs farmers farm-ers millions of dollars every year. An industrial laboratory spent five years developing the vaccine. vac-cine. It has been tried on 10,000 hogs in various parts of the: country, and found to immunize them within a week after treatment. treat-ment. The immunity is said to last at least six months, and tests are now beins made to determine whether it gives lifetime life-time protection against the disease. |