Four @entity4325 ( @entity4325 ) were inoculated intravenously with a deer-origin isolate (15B-WTD-GA) of Ehrlichia chaffeensis. The course of @entity281 was monitored using indirect fluorescent antibody (IFA), polymerase chain reaction (PCR), and culture over a 9 m period. All deer became rickettsemic within 24 days post inoculation (DPI), and all developed antibody titers >1:64 to @entity1116 by 17 DPI. Titers in all deer fell below 1:64 during 87 to 143 DPI. One deer exhibited a second period of seropositivity (peak titer of 1:256) from 207 to 271 DPI but was culture and PCR negative during this period. Rickettsemia was confirmed by reisolation of @entity1116 as late as 73 to 108 DPI in three deer. Positive PCR results were obtained from femur bone marrow of one deer and from rumenal lymph node of another (leer at 278 DPI. None of the deer developed clinical signs, @entity1503 , or gross or microscopic lesions attributable to @entity1116 . Two uninoculated control deer were negative on all tests through 90 DPI at which time they were removed from the study. Herein we confirm that @entity4325 become persistently infected with @entity1116 , have @entity1613 of several weeks duration and may experience recrudescence of rickettsemia, which reaffirm the importance of deer in the epidemiology of @entity1116 .

Persistent Ehrlichia chaffeensis @entity281 in XXXX .

@entity1503 :: ('MESH:D006402', 'Disease') :: ['hematologic abnormalities'] @entity281 :: ('MESH:D007239', 'Disease') :: ['infection'] @entity1613 :: ('MESH:D011230', 'Disease') :: ['initial rickettsemias'] @entity4325 :: ('9874', 'Species') :: ['white-tailed deer', 'Odocoileus virginianus'] @entity1116 :: ('945', 'Species') :: ['E. chaffeensis']
@entity4325 :: (9874,Species) :: ['white-tailed deer']
