Studies on Rocky Mountain spotted fever / U.S. Treasury Department, Public Health Service.

Date:
[1930]
Catalogue details

Licence: Public Domain Mark

Credit: Studies on Rocky Mountain spotted fever / U.S. Treasury Department, Public Health Service. Source: Wellcome Collection.

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    o the immunity tests (Table 3, pig 819), and others showed neither fever nor immunity (Table 3, pig 891). The following tables are typical illustrations of these results. (Temperatures are in the centigrade scale 39° to 39.6° being normal for guinea pigs.) TABLE 1—Drag tick natural infectivity experiment No. 72 [Tick lot No. 523] ‘First test of tick lot Retest of tick lot Contents of 15 ticks inoculated into pig No. 718, May 6, 1922 25 ticks placed on pig No. 1100, June 16, 1922 Date ra Remarks Remarks Wisivany se ones = 39. 2 IMS yat8t = eee eae 39.0 Ticks removed. Way Qe 2 e- se. 39. 4 Wiel OR eee eer 39. 2 Miayatite Ssiee. 39. 2 Misnyi ih 2e css = 39. 2 Mier 13 Seas 39. 2 Mia 14 ss 39. 2 May loss 2sse0 39. 0 NEA erOter eee ieee 39. 4 Miaylieo sa 39.6 | Immunity test. Wai See ees 39. 6 WAY 1985222 39.7 | . WEay. 202 Sc a0 = 39. 8 Dead; spotted fever. Mave Jie oes 40. 0 Milanya2 202252 oss | 40. 4 Minty 232-2. = 253 40. 6 IMigiys24 oo San ee | 41.0 Mie vezOE se 2559 41.0 Way 262. aro (ames See eae tt Killed; spotted fever. | | TaslLeE 2.—Drag tick natural infectivity experiment No. 61 [Tick lot No. 326] First test of lot Retest of lot Contents of 15 ticks inoculated into pig No. 663, 13 ticks in capsule fastened to pig No. 1095, June 16, May 2, 1922 1922 Temper- Temper- Date atts Remarks Date ature | Remarks May S2<.------ 39. 2 ee 2 Gt eee ee 38. 8 | Mity, (42222. = 22. 39. 2 ie JRaMOst Sins. 2s es 39.6 | Ticks removed. WEAN OS 25> S55 39. 0 Ho duame tO. 22. oe 40. 0 Maye O eee Soe 39, 2 Sumer 20s. wee 39. 6 ae aa ae 39. 4 || SOALINO? 2h ae ae 40. 0 May coeeee 39. 2 WHNE: 222 ke 225s oe : 41.0 WES Var 92 2 e252 39. 8 June Zsoossensss 40. 8 MianglOhs se bes 39. 0 Suns 4. se 41.0 Mav pbie. J2-2o= 39. 4 Ndi? Sere | 41.0 Wises. 2222 5s 39.4 | Immunity test. WMegG2 2. S2-22- 40.6 DRY Lan gee oe 39.0 WO Os escee ok 40. 6 Wiavy elas sos 38. 8 JUNeWRas = -ss4—% 40. 2 Wiay flout os. 39. 0 June 20s. se 40.0 | Killed; spotted fever. WiasvalGos sc2t22 39. 5 ; We yaN ie = foe 40.8 | MiavalSt 222 2225 40.8 104 0G a a ee 39. 6 Wiave20s Seca: 39. 0 Wiayezle 32s s3 38. 6 IMiaweo2i see 39. 2 Nai aoe ee = 38. 8 Way 2423.5. 38. 4 IMiayi2pe <2 oe oe 38. 6 Mia 20) ps se = 38. 8 1h 57 per 39.0 | Released; immune,
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