The differential blood count in dengue / by W.L. Harnett.

  • Harnett, W. L.
Date:
1913
Catalogue details

Licence: Public Domain Mark

Credit: The differential blood count in dengue / by W.L. Harnett. Source: Wellcome Collection.

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    During June, July and August I saw numerous cases and was able to contirm my previous observations. Towards the end of August the cases became less numerous, during September only a few scattered cases occurred and by the end of the month the epidemic had entirely ceased. CLINICAL CouRSE. 1 do not propose to say much on the aspect of the subject. Major Megaw, 1.ms.. in his paper “ Are Seven-Day Fever and Three-Day Fever forms of Dengue” (Indian Medical Gazette, January 1909) has exhaustively analysed the clinical features of the diseases known by these three titles, and has sum- marised with the greatest lucidity the evidence for their identity. He lays special stress on the variability of the disease in regard to every symptom and the eases which I have seen bear out this contention. The duration and the character of the fever are the most variable points of all and in illustration of this 1 append a series of thirteen charts arranged in order of duration of the fever :— Fever lasting 2 days ... Charts I, II, ITI. s a, ee ee LV VL i a ies SG BPRS. os By Sry Sa OT ee - 6, WEA Awe eee Bf Most of these cases it will be noticed fall into the second class in Megaw’s classification of the fever— “ Short fever type.” No. IV is the “ Interrupted Fever type” though not a good example. No, XI is the **Saddle-back type” ; whilst Nos. XII and XIII may be regarded as the “Continued Fever type” in which the secondary rise is merged into the primary fever. ‘The series begins with charts typical of the ‘“ Three-Day Fever” of Northern India and ends with charts which correspond fairly closely with the text-book accounts of the fever in dengue. Headache and pain in the loins were constant and characteristic in all the cases which I saw and joint pains were often present. All recent writers. on this subject agree that the severe “ Break bone” pains of the text-books are rarely complained of. Wimberley ‘Indian Medical Gazette, August 1910) never saw this symptom ; in the Brisbane and Philippine epidemics it was rare; Monro (Jndian Medical Gazette, September
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