Show DIAGRAM 1 SHOWING HOW FOOT AND MOUTH DISEASE WAS SPREAD 0 j IN i I 3 I CATiLl 5 t 4 or DRO I 4 J I ii I FA It II Imf rt rt which ni ns citi foot Coot and meuth dIs tP and A wine o oC n irs or of this by t In ole C were r 4 found to 10 be tJ with will foot mouth i vere int nl II 0 Ihl tIC DetroIt St k Yards to 10 mar nar DetroIt Four later t of troth Ih Ibl Detroit Vordi and ond were wece put Into Inlo the seii n b by lb Ibl calves seine were ot nt Detroit Ibl I I to 10 Nims ivere rl rJ to fl II Durl ID ia tie lbs be to I cl In nn nail NeW York Yora 10 In I The report or of an investIgation atlon Into the thc origin o of the outbreak of foot oot and mouth disease In the United States last fall fail b by Dr John R and Dr Milton J Rose nun nou has been issued In the thc form arm of n a 14 by the tho United States Department of Agriculture mind an any ono one interested In the sUbject may obtaIn some sanie b by writing to A D 0 Melvin ebb of Cl bureau of animal In dustS D C COn COtt Ott On No Nov 10 I 08 this disease was discovered among cattle in Pennsylvania and a few cw days later It was found also ill hi Nw New York an and Maryland In view or of the tho strIct quarantine maintained b by the hll rau on Imported live stock and time the fact that the im imitation of ruminants ruminant from countries foot and mouth di disease ase existed was prohibited entirely It seemed highly highl improbable that the infection was In with animals anc and varIous other othor ways in which it might ho havi gained entrance Into the UnitI States StatH wre vere as that curried carried the Itus on theIr clothing that thal It was brought in on hay or straw used for pocking packing or that It was introduced d In biological products When therefore the disease was traced bY bYthe bythe the bureaus inspectors dors to calves that had been used In propagating smallpox vaccine by a Detroit establish mont and time ca cases es of the longest standing were found among amnon these calves it was as considered probable that was contaminated with the virus o of oat foot and mouth disease and that title thIs caused the out outbreak break e especially since vaccine had been suspected o of being for the Now England outbreaks of rhen suspIcion was thus directed to th the vaccine virus Irus of the Detroit establishment It WitS decided to tomake tomake make an In investigation to determine tIlls this point and as tIme the United States Slate public health anti and marino marine hospital service ot of the Treasury Treasur Department is charged b by law lav lavIt It ith the of biological products use used In iii Inhuman human medicine that service was to joIn the bureau of animal Industry In the proposed In The rhe work was to Drs and Rosenau I It Is evident ent from th their 1 whIch were carried carriedo o out l in accordance with careful scientific that time recent outbreak of foot oot ani and mouth disease was caused b by the propagation of vaccine virus which had been contaminated 11 h time the virus Irus of foot ool and mouth disease and that the strain of oC vaccine came camo front from some foreign countr country where whre the prevailed In some ot of their tests Drs Mohler ud Rose au used anImals which had been vaccinated and nd re therefore Immune to or cowpox so o Ithal In cas the infection 0 of foot oot and ani moutH disease was vas present In tilt the under suspicion the tho lesions of that t disease would not he bc suppressed 0 or obscured lw hy those of B By this method and by means menns of oC Intravenous inoculation tho they were 10 able to 10 detect tIme tImet I t I contaminatIng infectIon when it il might not otherwise been Jo In the tho lIht of the evidence obtained ItS as to the orIgin of the recent It now erp probable that the tho No Now England of were due to the same cause q Although the toot foot md mouth disease has hns hen been eradicated vIgorous work b by thIs department and in cooperation with the state authorIties the facts acts disclosed h this report show that the country Is lit In constant danger danser of having this mind and contagious diseases of live stock introduced Introduce from abroad In spite of nil all tile the precautions that the department Is able to take talce under existing legislation |