Theileria sp. Infections associated with bovine fatalities in the United States confirmed by small-subunit rRNA gene analyses of blood and tick samples.
Theileria sp.-specific small subunit (SSU) rRNA gene amplification confirmed the presence of the organism in cattle and in Amblyomma americanum and Dermacentor variabilis ticks collected from a cattle herd in Missouri. Blood from the index animal had type A and type D Theileria SSU rRNA genes. The type D gene was also found in blood from two cohort cattle and tick tissues. The type A SSU rRNA gene was previously reported from bovine Theileria isolates from Texas and North Carolina; the type D gene was reported from a Texas cow with theileriosis.
Chae
J s
Js
Department of Veterinary Pathobiology, The Texas Veterinary Medical Center, Texas A&M University, College Station, Texas 77843-4467, USA.
Levy
M
M
Hunt
J
J
Schlater
J
J
Snider
G
G
Waghela
S D
SD
Holman
P J
PJ
Wagner
G G
GG
D000818:Animals; D002417:Cattle; D004275:DNA, Ribosomal / Q000737:chemistry*; D005260:Female; D016133:Polymerase Chain Reaction; D016053:RNA, Protozoan / Q000235:genetics*; D012335:RNA, Ribosomal / Q000235:genetics*; D016794:Theileria / Q000235:genetics*; D013801:Theileriasis / Q000175:diagnosis*; D013987:Ticks / Q000469:parasitology*
D004275:DNA, Ribosomal; D016053:RNA, Protozoan; D012335:RNA, Ribosomal