SEVENTEENTH ANNUAL YEAR BOOK— PART IX 497 



FOOT AND MOUTH DISEASE IN IOWA, 1914-15. 



Foot and mouth disease was evidently introduced into the state 

 of Iowa by three means : The shipment of cattle from the infected 

 Union Stock Yards at Chicago beween the dates of October 19 and 

 .30, 1914 ; by vaccination of swine with infected hog-cholera virus ; 

 and by infection carried by persons and dogs from the. neighboring 

 state of Illinois. 



Nine counties were infected and forty-nine herds, the property of 

 forty-nine owners, and located on forty-three premises, were slaugh- 

 tered. These herds were composed of a total of 1,547 cattle, 2,335 

 swine and thirty-two sheep. The appraised value was .$125,296.90. 

 The burial and disposal of the carcasses, disinfection of premises, 

 and miscellaneous expenses of the men employed, and property was 

 destroyed in disinfection to the amount of $1,329.48, making a total 

 of $136,287.34, which was shared equally by the state and the 

 United States Department of Agriculture. 



The first discovery of infection in the state was made on Novem- 

 ber 5, 1914, in the county of Iowa. Five other counties were in- 

 fected in November and three in February. 



Final disinfection in the state was concluded on March 22, 1915. 



IOWA BY COUNTIES'. 



BUCHANAN.— Infection discovered February ISth, 1915. Three herds, 

 three owners, three premises. 



Source of infection of first herd slaughtered in Buchanan county 

 is unknown, but is believed to have been carried into the state by 

 a visitor from Whiteside county, Illinois. Both remaining herds 

 were infected directly or indirectly through the first herd slaugh- 

 tered, one by infection probably carried by dogs, and the secona 

 through exchange of work by the owners. Disinfection in this 

 county was completed March 13th, 1915. 



CEDAR. — Disease was discovered November 15, 1914. Ten herds, ten 

 owners, nine premises. 



The first herd slaughtered in this county was infected through 

 the shipment of 30 head of cattle, shipped from the Union Stock 

 Yards at Chicago on October 30, 1914. These cattle came through 

 the Stan wood (Iowa) yards of the Chicago & Northwestern rail- 

 road, and two herds of swine in the yards were infected as a 

 result. Two herds slaughtered in this county were infected as a 

 result of vaccination for hog cholera, with infected virus, auu 

 the remaining five herds were infected through neighborhood visit- 

 ing, dogs, poultry, crows, etc. Final disinfection, January 9, 1915. 



