ROLE OF RODENTS AS RESERVOIRS OF EPIDEMIC INFECTIONS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600270272-0
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: September 19, 2011
• Sequence Number: 272
• Publication Date: December 14, 1949
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/09/19 :CIA-RDP80-00809A000600270272-0
CLASS!FlCATION C~TA I
CENTRAL INTELLIGENCE AGENCY REPURl
INFQFtMATION FRDM
vvUiw~i ~~Y toGti '., ,.
SUBJECT
HDW
PUBLISHED
WHERE
PUBLISHED
DATE
PUBLISHED
LANGUAGE
DaTE OF
INFORMATION .1949
llediral - Epidemiology
~iaoathly pariaelicnl
1(cecos
DATE DIST. jy~
N0. OF PAGES 3
3epf pct 1849
Russian
SUPPLEMENT TO
REPORT NQ.
Dec 1949
nn ?oca.txr W.ielxt uro.a.nox ?rrrau. Txa xano.ec mvx.a
er Tx. uxm. sxant vetwu rxt .pxlxl or x.nexr..a an eo
~. .. r_. xe.x~.r.u ua.rsa. m nuannox o. Tx..xresanax
ar m eo.mn a .uv ~u.~~ m ~N uxaen~o.nro .q..rox ie rxo?
?I.IA..T Y~. ~.~.Y6A6C7N. br TMI, rOxtl t. LONiarD.
THIS IS UNEVALUATED INFURM.ATiUN
Diges~
'Phis article, by )s. I. Ea]abnkhoa of tho Chair of 8aperimeatnl Ecology,
Ehar'1eo~ State University, ie not a report of original research but n report
m the oaams]atim of n considerable nmoimt as data compiled from various other
reports, bosh foreign nod daspetic. Ealabukhov etetes, early is the artials,
tit the beat method far controlling rodent-borne epidemics Sa n ccmpreheneive
study of the regalarities at the bioaeaotic cycle of aqy om disease of rodents.
B4 further suggests that eoologiete u tell ae veterinarians should mss this
study because the effect of rodent-borne epidemics ie directly relate8 to the
mveriaal strength of rodents.
f
Ia this artiaL, the anchor dea]a primarilj rich the epizootology of plague.
Be aotw that rsosatly mnah my material Lae appeared oa the role at rodene 1a
spreading rations haoterial, rune, riolrottsial end protozoal diseases. Stndiee
have shown that rodents have been reepmsibls fox riokettsinl epidasiiae in aas4y
reglems of Asia and Southern Europe (tsntenga mehi, Dlareeillee typhne), rate
Lars oansed typhus epidemics is malty large European and i8 cities, dad rate have
bsem rsepoosible for riabttsial epidemics in the Hocl~y ltountaia states. Reaentlj
!lzvlovalk~ dad Sorgsye? proved that the Dersaoentor nnttnlli, parasitic to same
steppe rodents, has been responsible for typhas-tsype fever in certain localities
!a the >~R. !Pro aR these hosts, the Stenooranias gregalie sad Citellne pnrryi,
were cost iafsoted d~aiag the suwmer. Other research shoved that mtgy Rattue
aorvegione Ezxl ors hosts to tro different types of typhus, end that the riala+tteial
virus rs~sina vitaleat far se long ns 2~annthe. >ce, and mosquitoes.
One of the moat unique features of rodent-transmitted epidemics ie their
esaecnnl nature. It has been determined that diseases which are transmitted from
rodent to rndeat, or from rodent to human, nra ueual~y moat prevalent Sa summer Wad
fall. Diaeneas xblch arQ transmitted by field mice sae moat evident after the
filling of ~i?i~?a a?'du in~euat;ae. 'eaaicaiiy, however, the number of incidences
!e directly dated to the life oycle as the rodante. Thus the change in the
euev-eptibility of rodante moat be taken into ooaeideretion because it ie in taro
related to eeseonnl ph5eiol.oafcal ~~-~-?-??
--.....6,,., ~du tanager in the degros of contact with
ii'e source o' infection, the latter being dependent primarily oa the number of'rodeate.
Another factor affected by eansoae ie changes in the ability of ezteraal factors to
euppart eourcea of iafectiai. factors relative to the htmina are moat important in
doteratining the possible morbidity rate in hvaan popvlntions. For ea.mple, if n
!Wiser Dames is frequent contact with haystacks, etc., he ie apt to be more eaeilp
infected thna an office worker.
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Sanitized Copy Approved for Release 2011/09/19: CIA-RDP80-00809A000600270272-0
 Sanitized Copy Approved for Release 2011/09/19 :CIA-RDP80-00809A000600270272-0
It has been noticed is some oases thrt salt vans-blooded aaisals are Iesa
eaaosptible to pLagua tu3aramia or other~paetnrallaele is viater, and 1a ema
Sae~taaoslr they omplat,ly recover frm the dieasae whichthey ooatraotsd daring
an epidealo. Ernrerar, it appears tLat is anxV rogiume (Japan, 8nesoe Aireel
roAeata are care actively inteated is winter than is euawer: Bach of this !e
nttsibated to the unfavorable lining conditiotas ~ rodaunte during the xinter
eoa~on, ?.g., renter coaceatrnt'an of rodents !a a single site (nests, burrows,
etc.). Thvs, it can be stated safely that the danger of apideat3ce !a nay
locality to dirautla related to tho dograe of coaoeatrntion of rodents flaring
the wiate+r period.
~~,~':. .
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Sanitized Copy Approved for Release 2011/09/19 :CIA-RDP80-00809A000600270272-0