The present-day attitude in regard to the action of vaccines is that an excess of antibodies is produced in the blood as result of vaccine injection, which antibodies actually destroy the bacteria, chiefly by dissolving them either in the tissue fluids, or, after ingestion, into leucocytes. This concept does not explain the successful results of minute doses of vaccine in acute infections.
Typhus fever frequently affects the African population of the highveld of the Eastern Transvaal. Outbreaks involving several cases are reported almost every year. With the wide and controlled use of D.D.T., or some similar insecticide, there is every reason to hope that louse-borne typhus fever will be eradicated from the Eastern Transvaal, as well as from other areas of South Africa, where for long it has been a prevalent disease.
A case of prevascular femoral hernia operated on five times before and finally cured by a reconstructive fascia implant. The cause of the prevascular hernia was apparently an absence of the inguinal ligament, no representation of which could be found at either operation.