Presence of diverse Rickettsia spp. and absence of Borrelia burgdorferi sensu lato in ticks in an East Texas forest with reduced tick density associated with controlled burns
This study documents a high prevalence in ticks of Rickettsia spp. thought to be endosymbionts, a low prevalence of relapsing fever group Borrelia in ticks, and a lack of detection of Lyme disease-group Borrelia in both ticks and mammals in an east Texas forested recreation area. Additionally, we observed low questing tick density in areas with a history of controlled burns. These results expand knowledge of tick-borne disease ecology in east Texas which can aid in directing future investigative, modeling, and management efforts.
Thousands of Covid-19 patients have been treated with blood plasma outside of rigorous clinical trials — hampering research that would have shown whether the therapy worked.
Stacey Nagy told CNN's Erin Burnett she wrote an obituary for her husband's coronavirus death where she blamed President Trump, Texas Gov. Abbott and those who do not wear masks because she felt a need to "put blame where it belonged."
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Publication date: Available online 4 August 2020Source: Ticks and Tick-borne DiseasesAuthor(s): Janet Sperling, Zachary MacDonald, Jacalyn Normandeau, Evelyn Merrill, Felix Sperling, Katharine Magor
Publication date: Available online 4 August 2020Source: Ticks and Tick-borne DiseasesAuthor(s): Patrícia F. Barradas, João R. Mesquita, Paula Ferreira, Irina Amorim, Fátima Gärtner
In 1975, researchers from Yale investigated an epidemic of 51 patients with arthritis who lived near the woodsy town of Lyme, Connecticut. The most common symptom was recurrent attacks of knee swelling. A few had pain in other joints, such as the wrist or ankle. Many had fever, fatigue, and headache. Some remembered a round skin rash before the onset of knee swelling. We now know that Lyme disease is an infection acquired from tick bites, caused by a spiral bacterium named Borrelia burgdorferi. After a tick bite, Borrelia bacteria wriggle through the skin away from the bite site. This leads to a circular red rash, known as...