. Applied bacteriology for nurses. re is alsospoken of as the primary stage. It lasts about sixto eight weeks, and is followed by the secondary symptoms of the secondary stage include a rash,sore throat, pains in the joints, falling out of the hair,etc. The duration of this stage is variable, and no hard-and-fast line can be drawn between it and the tertiarystage. During the latter the disease shows a tendencyto produce certain skin eruptions, gummatous growths inthe viscera, and degenerations. The ulcerations, especially the primary sore (chancre),and the so-called mucous patches in
. Applied bacteriology for nurses. re is alsospoken of as the primary stage. It lasts about sixto eight weeks, and is followed by the secondary symptoms of the secondary stage include a rash,sore throat, pains in the joints, falling out of the hair,etc. The duration of this stage is variable, and no hard-and-fast line can be drawn between it and the tertiarystage. During the latter the disease shows a tendencyto produce certain skin eruptions, gummatous growths inthe viscera, and degenerations. The ulcerations, especially the primary sore (chancre),and the so-called mucous patches in the mouth and 119 120 APPLIED BACTERIOLOGY FOR NURSES throat, are exceedingly infectious. Examined withthe dark-field microscope, scrapings from these ulcera-tions are seen to swarm with the Treponema syphilitic having mucous patches may infect a drink-ing-cup or a spoon and cause infection of others. Theinfection then makes its appearance on the lip or tongueof the victim. Infection may also be carried Fig. 38.—Treponema pallidum appearing as bright refractivebody on a dark field, as shown by India ink or ultramicroscope(Park and Williams). When syphihs is transmitted from parent to offspring,the disease often shows itself in the l^aby by what arecalled snuffles. The secretion from the nose of suchbabies is highly infectious. A syphilitic baby shouldnot be given to a healthy wet-nurse to suckle. If themother cannot nurse it, the baby should be brought upon the bottle. SYPHILIS 121 A great aid in the diagnosis of syphilitic infections isthat devised by Wassermann, of Beiiin. This, test canbe performed either on the blood or the cerebrospinalfluid of patients. AMiile a positive result indicates asyphilitic infection, a negative result does not indicatethe absence of such infection. CHAPTER XXIII EXANTHEMATA! Under this head are included measles, Germanmeasles, scarlet fever, small-pox, chicken-pox, andtyphus fever. They are ahke, in that no specifi
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