Tick- and Mosquito-borne Diseases: Trends in the United States

The following data are abstracted from Gideon and the Gideon e-book series. [1]  Charts were created using an interactive tool driven by over 30,000 base graphs in the program. [2] Chart 1 contrasts trends for reported incidence of Lyme disease and Rocky Mountain spotted fever (RMSF).  Note that while rates of Lyme disease in 2016 are 15-fold those reported in 1987, those of RMSF increased by a factor of seven.  The number of fatal cases for both diseases have remained similar in recent years (i.e., the relative case-fatality rate of Lyme disease has decreased) Chart 2 summarizes incidence data for a variety of tick-borne and mosquito-borne infections.  Note that rates of Ehrlichiosis, Anaplasmosis, Babesiosis, Jamestown Canyon virus infection and Powassan encephalitis have increased since the year 2000.  The incidence of LaCrosse encephalitis has decreased, while that of California encephalitis is largely unchanged. Charts 3 and 4 demonstrate that incidence and reported deaths for Western equine encephalitis, Eastern equine encephalitis, St. Louis encephalitis and West Nile fever have changed little in recent years. References: Berger S. Infectious Diseases of the United States, 2018. 1,254 pages, 510 graphs, 16,672 references. Gideon e-books,  https://www.gideononline.com/ebooks/country/infectious-diseases-of-the-united-states/ Gideon e-Gideon multi-graph tool,  https://www.gideononline.com/cases/multi-graphs/ The post Tick...
Source: GIDEON blog - Category: Databases & Libraries Authors: Tags: Ebooks Epidemiology Graphs ProMED Source Type: blogs

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Abstract Ticks are the most important vectors of human pathogens, leading to increased public health burdens worldwide. Tick-borne pathogens include viruses (e.g. tick-borne encephalitis and Powassan); bacteria, such as the causative agents of Lyme disease, spotted fever rickettsiosis and human anaplasmosis; and malaria-like protozoan parasites causing babesiosis. Tick-borne diseases are emerging due to the geographical expansion of their tick vectors, especially in the northern hemisphere. Two examples of this phenomenon are Ixodes scapularis and Amblyomma americanum, which have expanded their ranges in the USA i...
Source: Journal of Medical Microbiology - Category: Microbiology Authors: Tags: J Med Microbiol Source Type: research
Committee Opinion No. 399: Management of Tick Bites and Lyme Disease During Pregnancy: (En français : Prise en charge des morsures de tiques et de la maladie de Lyme pendant la grossesse). J Obstet Gynaecol Can. 2020 May;42(5):644-653 Authors: Smith GN, Moore KM, Hatchette TF, Nicholson J, Bowie W, Langley JM Abstract OBJECTIVE: Lyme disease is an emerging infection in Canada caused by the bacterium belonging to the Borrelia burgdorferi sensu lato species complex, which is transmitted via the bite of an infected blacklegged tick. Populations of blacklegged ticks continue to expand and are now es...
Source: Journal of Obstetrics and Gynaecology Canada : JOGC - Category: OBGYN Tags: J Obstet Gynaecol Can Source Type: research
Abstract Ixodes scapularis is currently known to transmit 7 pathogens responsible for Lyme disease, anaplasmosis, babesiosis, tick-borne relapsing fever, ehrlichiosis, and Powassan encephalitis. Ixodes scapularis can also be colonized by endosymbiotic bacteria including those in the genus of Rickettsia. We screened 459 I. scapularis ticks submitted to the Connecticut Agricultural Experiment Station Tick Testing Laboratory with the objectives to (1) examine differences in infection prevalence of Borrelia burgdorferi, Anaplasma phagocytophilum, Babesia microti, and Borrelia miyamotoi, (2) evaluate whether prevalence...
Source: The Journal of Parasitology - Category: Parasitology Authors: Tags: J Parasitol Source Type: research
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