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1935-1936, 4.2 per cent of the cottle tested were positive reactors; dropping to 1.4 per cent in 1940 and increasing to 3.1 per ' cent reactors in 194*8 with good prospects of increasing’to a higher percentage of reactors in 1949. Ground gained in (brucellosis eradication by test and slaughter up to 1940 has been practically lost since then. Why is this adverse trend? How can we stop it? are a few of the daily questions asked about this Virginia brucellosis situation.
The teat-and-slaughter plan of brucellosis eradication has been enforced that it is effective; although quite as drastc as it is expensive under certain farm conditions. Test and slaughter alone will eventually eradicate brucellosis from a herd or community, but the costs of such a plar. are frequently unbearable for the man who must live from the monthly income from his herd. Theft, too, under Virginia conditions there are many opportunities for a brucellosis free herd . to become re-infected from neighboring infected herds. It is the
58.5%