Results 21 to 30 of about 9,793 (167)

Ehrlichia chaffeensis DNA in Haemaphysalis longicornis Ticks, Connecticut, USA. [PDF]

Emerg Infect Dis
Informed by passive tick surveillance, we collected questing Haemaphysalis longicornis ticks from southwestern Connecticut, USA. Of 445 ticks tested by PCR, 3 nymphs were positive: 1 for Ehrlichia chaffeensis and 2 for Borrelia burgdorferi.
Molaei G, Mohapatra AR, Khalil N, Cozens D, Bonilla D.   +4 more
europepmc   +2 more sources

Long-Term Protective Immunity against Ehrlichia chaffeensis Infection Induced by a Genetically Modified Live Vaccine. [PDF]

Vaccines (Basel)
Human monocytic ehrlichiosis, an emerging tick-borne disease, is caused by Ehrlichia chaffeensis. Infections with the pathogen are also common in the canine host. Our previous studies demonstrated that functional disruption within the E.
Madesh S, McGill J, Jaworski DC, Ferm J, Liu H, Fitzwater S, Hove P, Ferm D, Nair A, Knox CA, Alizadeh K, Thackrah A, Ganta RR.   +12 more
europepmc   +2 more sources

Prolonged immune response to tick-borne Ehrlichia chaffeensis infection using a genetically modified live vaccine. [PDF]

Vaccine
Ehrlichia chaffeensis, a tick transmitted rickettsial bacterium, causes monocytic ehrlichiosis in humans and dogs. Earlier, we demonstrated that dogs immunized with a mutant strain of E. chaffeensis having a functional disruption in the gene encoding the
Madesh S, McGill J, Jaworski DC, Ferm J, Ferm D, Liu H, Fitzwater S, Nair A, Hove P, Alizadeh K, Knox C, Thackrah A, Ganta RR.   +12 more
europepmc   +2 more sources

Genetic characterization of a novel Ehrlichia chaffeensis genotype from an Amblyomma tenellum tick from South Texas, USA. [PDF]

Ticks Tick Borne Dis, 2022
Ehrlichia chaffeensis is the causative agent of human monocytotropic ehrlichiosis (HME), a disease that ranges in severity from mild to fatal infection.
Arroyave E, Quade B, Mendell NL, Blanton LS, Bouyer DH.   +4 more
europepmc   +2 more sources

Donor-Derived Ehrlichiosis Caused by Ehrlichia chaffeensis from Living Donor Kidney Transplant. [PDF]

Emerg Infect Dis
Tickborne infections are challenging to diagnose, particularly among solid organ transplant recipients. We report a US case of donor-derived ehrlichiosis from a living kidney donation that highlights how screening for living donors may miss tickborne ...
Scolarici MJ, Kuehler D, Osborn R, Doyle A, Schiffman EK, Garvin A, Villalba JA, Ramos CJ, Paddock CD, Annambhotla PD, Taylor M, Salzer JS, Saddler C, Thiessen C, Kandaswamy R, Odorico J.   +15 more
europepmc   +2 more sources

Serosurvey of <i>Anaplasma phagocytophilum</i>, <i>Babesia microti</i>, and <i>Ehrlichia chaffeensis</i> in Quilombola Communities of Southern Brazil. [PDF]

Pathogens
Although quilombola individuals and their dogs may be exposed to hemoparasites such as A. phagocytophilum, B. microti, and E. chaffeensis, no study to date has been conducted in these populations.
França DA, Kmetiuk LB, Silva FPD, Panazzolo GK, Biondo LM, Domingues OJ, Fávero GM, Duré AÍL, Biondo AW.   +8 more
europepmc   +2 more sources

Ehrlichia chaffeensis Etf-3 Induces Host RAB15 Upregulation for Bacterial Intracellular Growth. [PDF]

Int J Mol Sci
Ehrlichia chaffeensis infects human monocytes or macrophages and causes human monocytic ehrlichiosis (HME), an emerging life-threatening zoonosis. After internalization, E. chaffeensis resides in membrane-bound inclusions, E.
Yang N, Li M, Qin S, Duan N, Li X, Zhou Y, Wang M, Jin Y, Wu W, Cheng Z.   +9 more
europepmc   +2 more sources

Potential zoonotic role of the tick Amblyomma cf. oblongoguttatum (Ixodida: Ixodidae) in the bacterial transmission of Ehrlichia chaffeensis (Rickettsiales: Anaplasmataceae) in a deciduous tropical forest in Mexico. [PDF]

J Med Entomol
Ehrlichia chaffeensis is a bacterium belonging to the Anaplasmataceae family. In Mexico, only 2 species have been recorded in association with tick species and humans. The objective of the present study was to detect the presence of bacteria of the genus
Guzmán-Cornejo C, Herrera-Mares A, García-Prieto L, Oceguera-Figueroa A, López-Pérez AM, Dzul-Rosado K.   +5 more
europepmc   +2 more sources

Evaluating EcxR for Its Possible Role in Ehrlichia chaffeensis Gene Regulation. [PDF]

Int J Mol Sci, 2022
Ehrlichia chaffeensis, a tick-transmitted intraphagosomal bacterium, is the causative agent of human monocytic ehrlichiosis. The pathogen also infects several other vertebrate hosts. E.
Liu H, Knox CA, Jakkula LUMR, Wang Y, Peddireddi L, Ganta RR.   +5 more
europepmc   +2 more sources

Insights into the mechanism regulating the differential expression of the P28-OMP outer membrane proteins in obligatory intracellular pathogen Ehrlichia chaffeensis. [PDF]

Emerg Microbes Infect, 2021
Ehrlichia chaffeensis causes human monocytic ehrlichiosis (HME), which is one of the most prevalent, life-threatening emerging infectious zoonoses. The life cycle of E. chaffeensis includes ticks and mammals, in which E.
Duan N, Ma X, Cui H, Wang Z, Chai Z, Yan J, Li X, Feng Y, Cao Y, Jin Y, Bai F, Wu W, Rikihisa Y, Cheng Z.   +13 more
europepmc   +2 more sources