In a newly published US study, Anaplasma phagocytophilum–human agent variant has been detected for the first time in the highly invasive Asian longhorned tick (Haemaphysalis longicornis). Active tick surveillance was conducted throughout Pennsylvania during the time period of May 1st through September 6th, 2019. Researchers tested 265 ticks for rickettsial pathogens through PCR testing and […]
Dowling, A., Young, et al., published a report in Journal of Medical Entomology with the results of a cooperative effort to survey ticks throughout Arkansas to better understand the heavy impacts of TBDs such as spotted fever rickettsiosis and ehrlichiosis in the mid-south. Logistical and financial barriers, and expanding geographic area of concern, prompted researchers to collaborate with members of the public to gather data on human disease-causing pathogens carried by ticks.
A recent study published in the CDC’s Emerging Infectious Diseases journal finds ehrlichiosis and anaplasmosis can also be transmitted through blood transfusions or organ transplants. The article states, “Since 2000, ehrlichiosis and anaplasmosis cases in the United States have increased substantially, resulting in potential risk to transplant and transfusion recipients.”
In a recently published review article,* authors provide a comprehensive summary of treatment options for pregnant patients with less common bacterial, fungal, and viral infections, including several tick-borne diseases (Lyme disease, ehrlichiosis, human granulocytic anaplasmosis, human monocytic ehrlichiosis, babesiosis, and Rocky Mountain spotted fever). This review provides guidance to clinicians based on the most recently […]
In a recent article, investigators describe multiple cases of organ transplant derived Ehrlichiosis infections in donor recipients. Two cases of ehrlichiosis were reported to the Organ Procurement and Transplantation Network (OPTN) and the Centers for Disease Control and Prevention (CDC) for investigation in 2020. These two kidney recipients from a common donor developed fatal ehrlichiosis-induced […]
Ohio State University researchers have just published on their creation of nanobodies which target the protein that causes E. chaffeensis bacteria to be extremely infectious. It is thought that these nanobodies can be developed as a new or complementary therapy for human monocytic ehrlichiosis as well as other tick-borne diseases that are caused by intracellular infections, infections that can be fatal if left untreated or undertreated.
Scientists used to separate ehrlichiosis into two entities caused by the bacterium Ehrlichia: Human Monocytic Ehrlichiosis (HME) and Human Granulocytic Ehrlichiosis (HGE). After further study, they determined that HGE is actually caused by a bacterium, Anaplasma phagacytophilum. HME is caused by a bacterium, Ehrlichia chaffeensis. Symptoms of ehrlichiosis/anaplasmosis include: fever, malaise, headaches, chills, severe muscle aches, vomiting, […]