Show 4 8 jack rabbits C cause ause deer ut lit hi 41 11 fly fever say experts its 11 lj n v C D M MN weely eely I 1 in a apeci specially ally constructed labora sl it tory at delta government experts j have bc been tk busily engaged since MRY may li investigating a new disease of man f which heretofore haa never had Us its it II name recorded in the anadis of j cal after literature mure text books of belne do not contain tho the na name me deer 11 J j ny fever the medical profession at 23 i large has never heard of doer deer ny fly bev ill 1 er although physicians of boxelder Box elder ill 17 j county and millard county have been I 1 familiar with its symptoms for tile the 41 last eight years U lit your correspondent on hearing of the discovery being made regarding 14 1 this strange malady by the united is I 1 ly states public health service visited 11 the government laboratory nt at delta band i and there found that ever busy scientist dr edward francis of the 1 united states public health service kur surrounded rounded by a veritable table menagerie pt ot guinea pigs rabbits white rats ahi e mice quimpo qu imps rips and deer mes flies for those who do not allow what a ciul mp Is I 1 will sa bay y that it j is the popular name of that chat destruct destree a ove live ground squirrel irrel which con coders ers 11 utah and adjoin ang states and is re corded in the squirrel book under ahe lie name of mollis I 1 dr beatty ail aid id it I 1 asked the doctor how the govern 11 II ment became apprised ol of the exist nee of deer fly fever and how it came to undertake the investigation 0 is aphis brought the reply that abr hadr T B be beatty atty state commissioner at f health of utah had known of the 11 WEl ni stence of 0 t the he als disease ease in boxelder Box elder and ind billard M alard counties for a number of 11 04 1 rears and that he had made au all ap to the surgeon general of the public health service in washington lh IQ aitor tor a bacteriologist to investigate the 31 it t muse use pt of tile the disease the manner in chich falch it Is contracted conr acted the agency of fly in its transmission and it io 10 throw light upon the means of pre renting and combating its spread ond to devise means ot of curing its unfortunate I 1 I 1 victims A the job being LS SIgned to me laid the doctor 1 I arrived in iii delta 41 a july 1316 1919 and went to worl 11 alter after spending a month in the I 1 cams came down with the ever bier myself I 1 then packed my 10 1 nines plea pigs and rabbits and shipped jj liem em and rolled myself up in a hii lan an berth and left for washington borg I 1 spent a month in bed in the running ft a dally fever the if 11 ot month was spent in a hotel look lit jl ng 9 out of tho the window win dov and the third I 1 donth was spent around town on i aiho road to recovery I 1 1 at lt it tho hospital doctors tried to if ft patch 11 my case with apio fever ever if ith daood poisoning with if alb 0 and with other diseases with 11 blots thoy were familiar but I 1 I 1 14 uld not 1101 match the laboratory is upon tile condition of my lily blood 5 wino me back negative on every count 11 I 1 ift became ap apparent to them that I 1 iras diroa suffering from boine now new ilia dig 0 rith which they hey were not aamli lent aar r but the guinea gulnor pigs pi 9 a solved tilo tho r be sj 11 i astery and ania will solve tile mystery ithe the dl dlag nosH of 0 any case of 0 deer by yf bever ever ilas 0 deer dec ny fly fever is 19 a jack abbit I sease abe ill reservoir of infection is m the mck cick dying aud dead i jack ack rab 1 lits its I 1 dont make this statement I 1 merely lorely from casual observation but illy IY I 1 after a month of dally disse dissection tion it V jack rabbits snot shot find and collected j iver er a stretch of forty miles ot of coun coin if 7 northwest of delta the number t lack rabbits dissected was pd d of this number eighteen were und nd to be infected I 1 i conlon on to jack only one gulmi was found infect out of dissected an infected ek k rabbit Is known by the condl n ot its spleen and liver the leen and liver of a normal jack abbit have a uniform red color but od dissected spleen or liver has in ad 1 tion lion al arge number ot of white spots trL buted all over a red back cund thus producing an appear 1 ice ce very much like red marble jn in ct t one physician spoke ol of such a leen as a marble spleen I 1 caused by vy fy bite the deer fly fever of man Is a noso idease tease or of the rural population or of hose who visit the rural districts als is initiated by a fly bite on some posed part ot of the body most com coin lionly the head and neck then fol foi low an all enlargement of the an superficial impei glands glanda which drain the bitten bittell area and a fever 0 of a type lasting stoia three to six weeks s the th a sadron the bite and the affected lymph glands become tender and inflamed and they commonly break down into abscesses which rupture through the skin leaving a permanent sear scar the patients are often confined to bed very few fatalities have been reported probably not ovar 0 about two dozen cases hala biava occurred lit in millard county in each of the past four years the importance tance of the disease arises froin the economic loss which it occasions to the farmer farmer just at the seass season I 1 on of tile the year when lieis heis lie he is most needed on the farm A disabling sickness alif which al overcomes a 1 farmer in the latter part of june and continues Figi july and august is 13 a serious er lous ill illness nest and ana yet that is eartly what mccu occurs n deer fly fever g hainan canes baies stabled six typical human cases veree I 1 I 1 lecter for c dewied stu study d y one wl p of guinea pias was inoculated with the pus from the suppurating glands of these patients another series of guinea pigs was with the blood of these patients both ss se ries of anlin animals als developed a disease di seas which proved fatal in a few days on oi i postmortem post mortem examination these ani als showed allowed I 1 1116 yilli glands which rc resembled em bled in ill all reg rea t aspects ti thi uppa of the lymph glands is in the human and the showed abo ved also the spotted condition of the liver and spleen which ifould in in the infected jack rabbits abo final proof of the identity of 0 the two diseases was furnished by bacteriological cultures the germ which cau causes both diseases is tile the bacterium tula rense this germ was recovered in cultures ea from human in cases and fro from m jack rabbits identity established the identity ot of the innman bunian disease and the jack rabbit disease having been proved the next question to answer was how does the lack jack rabbit disease find entrance into the human subject since deer flies files haie been hold held under suspicion those these flies were selected for experimental transmission of the disease tame rabbits having b en inoculated with the humai disease and having lecome sick were ere exposed to the bites of deer flies and thus the deer fles became infected the infected deer nies flies were then allowed loved al to lite bite healthy rabbits slid and healthy guinea pigs with the result that the healthy animals contracted the disease within a few days and died with all the symptoms of the infected rabbits the chain of evidence was thus complete and it stands proved that the hie deer fly ii capable of trans mILLing the infection by its bite bile |