. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. The Plague Fleas S6i that of the preferred host, ovulation follows in about twenty-four hours. The eggs are relatively large, and small numbers are produced. In the case of Sarcopsylla penetrans, a flea that has no known interest in con- nection with plague transmission, the female after copulation imbeds itself in the skin of the host and suffers an enormous saccular distension of the abdomen where many ova are produced. Ordinary fleas never imbed thems
. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. The Plague Fleas S6i that of the preferred host, ovulation follows in about twenty-four hours. The eggs are relatively large, and small numbers are produced. In the case of Sarcopsylla penetrans, a flea that has no known interest in con- nection with plague transmission, the female after copulation imbeds itself in the skin of the host and suffers an enormous saccular distension of the abdomen where many ova are produced. Ordinary fleas never imbed themselves but sim- ply bite and suck blood, leaping off of the host when satisfied. Epidemics of plague among men are commonly preceded by epizootics of plague among rats. The mortality of the rats being high and their number diminishing, many fleas are unprovided for and seek human hosts upon whom to satisfy their appetites. In this way, the plague which was at first transmitted by the fleas to the rats, is now transmitted to men. Hiunan fleas may also trans-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McFarland, Joseph, 1868-. Philadelphia and London, W. B. Saunders Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteri, bookyear1916
