CLINICAL AND EPIDEMIOLOGICAL FEATURES OF INFECTIONS ECOLOGICALLY RELATED TO TICKS IN THE CHELYABINSK REGION

An analysis of the incidence in the dynamics of years (1998-2018) showed that the leading place among infections transmitted by ixodid ticks in the Chelyabinsk region is occupied by tick-borne tick-borne borreliosis (IKB), tick-borne encephalitis (TBE) is less common. Long-term monitoring of the natural foci of TBE and IKB showed their high epizootological potential. In 2018, febrile forms prevailed in the structure of clinical forms of TBE - 61.9%, meningeal and focal forms were found in 28.5% and 9.4%, respectively. Focal forms were represented by meningoencephalitic and polioencephalomyelitis forms with the same frequency of 4.7%. In the structure of the nosological diagnosis of ICD in the South Urals, erythema forms of the disease prevail (69.5%). The detection frequency of Borrelia DNA of the pathogenic complex B.burgdorferi s.l. in the blood serum and leukocyte fraction of patients was 13%. In 4 patients, for the first time in the Chelyabinsk region, DNA of a new Borrelia miyamotoi Borrelia genotype was detected in whole blood samples and in the samples of the leukocyte fraction using PCR-RV. Phylogenetic analysis of B. miyamotoi was carried out on all sequences of glpQ and 23SrRNA gene fragments, deposited at NCBI and homologous sequences of Chelyabinsk-2018 isolates. The disease proceeded in non-erythema form, intoxication syndrome, myalgia, chills were observed in the clinical picture.

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The Results of the Long-Term Monitoring of the Cross-Border Air Transport of the Artificial Radionuclides to the Territory of the Sverdlovsk Region from the Nuclear Fuel Cycle Facilities Located in the Chelyabinsk region

Medico-Biological and Socio-Psychological Problems of Safety in Emergency Situations ◽

10.25016/2541-7487-2017-0-1-84-94 ◽

2017 ◽

pp. 84-94

Author(s):

Vera Nikolaevna Trapeznikova ◽

Aleksandr Vasil’evich Korzhavin ◽

Aleksandr Viktorovich Trapeznikov ◽

Anatolij Petrovich Plataev

Keyword(s):

Nuclear Fuel ◽

Fuel Cycle ◽

Nuclear Fuel Cycle ◽

Air Transport ◽

Artificial Radionuclides ◽

Cross Border ◽

Long Term Monitoring ◽

Chelyabinsk Region ◽

Term Monitoring

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Long-Term Monitoring of the Numbers of Ixodid Ticks (Acari: Ixodinae) in St. Petersburg and Leningrad Province

Entomological Review ◽

10.1134/s0013873821020123 ◽

2021 ◽

Vol 101 (2) ◽

pp. 256-264

Author(s):

L. A. Grigoryeva ◽

E. P. Samoilova ◽

A. O. Shapar ◽

E. M. Bychkova ◽

G. A. Lunina ◽

...

Keyword(s):

Ixodid Ticks ◽

Leningrad Province ◽

Long Term Monitoring ◽

Term Monitoring

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Birds of La Plata Island, Machalilla National Park, Ecuador

10.7287/peerj.preprints.2181v1 ◽

2016 ◽

Author(s):

Diego F Cisneros-Heredia

Keyword(s):

Native Species ◽

National Park ◽

Passer Domesticus ◽

La Plata ◽

Sula Granti ◽

Sula Leucogaster ◽

Phoebastria Irrorata ◽

First Time ◽

Term Monitoring

La Plata Island, Machalilla National Park, is located 30 km off the Ecuadorian coast. In June 2000, I surveyed the avifauna of La Plata Island. In total I observed 57 species of birds (25 families). At least 17 species are known to breed on the island; in fact, for mainland Ecuador, Waved Albatross Phoebastria irrorata, Red-billed Tropicbird Phaethon aethereus, Nazca Booby Sula granti, and Red-footed Booby Sula sula only breed in La Plata. Long-tailed Mockinbird subspecies Mimus longicaudatus platensis is the only endemic bird taxon of the island. House Sparrow Passer domesticus is the only non-native species of the island. Brown Booby Sula leucogaster, Ecuadorian Ground-Dove Columbina buckleyi, Little Woodstar Chaetocercus bombus and Yellow-bellied Elaenia Elaenia flavogaster are reported for the first time on the island. Isla de La Plata maintains an important biodiversity, and it is necessary to implement conservation, management and tourism plans on a sustainable way along with long-term monitoring studies of the fauna and flora.

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Prevalence of pathogens in ticks collected from humans through citizen science in Belgium

Parasites & Vectors ◽

10.1186/s13071-019-3806-z ◽

2019 ◽

Vol 12 (1) ◽

Cited By ~ 2

Author(s):

Tinne Lernout ◽

Nick De Regge ◽

Katrien Tersago ◽

Manoj Fonville ◽

Vanessa Suin ◽

...

Keyword(s):

Borrelia Burgdorferi ◽

Citizen Science ◽

Lyme Borreliosis ◽

Great Majority ◽

Dermacentor Reticulatus ◽

Human Infection ◽

Borrelia Miyamotoi ◽

Tick Borne Encephalitis ◽

Tick Borne Encephalitis Virus ◽

First Time

Abstract Background In order to evaluate the risk of human exposure to tick-borne pathogens in Belgium, a study on the prevalence of several pathogens was conducted on feeding ticks removed from humans in 2017. Methods Using a citizen science approach based on an existing notification tool for tick bites, a sample of ticks was collected across the country. Collected ticks were screened by PCR for the presence of the following pathogens: Anaplasma phagocytophilum, Babesia spp., Borrelia burgdorferi (sensu lato), Borrelia miyamotoi, Neoehrlichia mikurensis, Rickettsia helvetica and tick-borne encephalitis virus (TBEV). Results In total, 1599 ticks were included in the sample. The great majority of ticks belonged to Ixodes ricinus (99%); other tick species were identified as Ixodes hexagonus (0.7%) and Dermacentor reticulatus (0.3%). Borrelia burgdorferi (s.l.) was detected in 14% of nymphs and adult ticks. Adult ticks (20%) were more likely to be infected than nymphs (12%). The most common genospecies were B. afzelii (52%) and B. garinii (21%). Except for TBEV, the other tick-borne pathogens studied were all detected in the tick sample, although at a lower prevalence: 1.5% for Babesia spp.; 1.8% for A. phagocytophilum; 2.4% for B. miyamotoi; 2.8% for N. mikurensis; and 6.8% for R. helvetica. Rickettsia raoultii, the causative agent of tick-borne lymphadenopathy, was identified for the first time in Belgium, in two out of five D. reticulatus ticks. Co-infections were found in 3.9% of the examined ticks. The most common co-infection was B. burgdorferi (s.l.) + N. mikurensis. Conclusions Although for most of the tick-borne diseases in Belgium, other than Lyme borreliosis, no or few cases of human infection are reported, the pathogens causing these diseases were all (except for TBEV) detected in the tick study sample. Their confirmed presence can help raise awareness among citizens and health professionals in Belgium on possible diseases other than Lyme borreliosis in patients presenting fever or other non-characteristic symptoms after a tick bite.

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Dynamics of gamma diversity and abundance of diurnal butterflies (Lepidoptera, Papilionoformes) in the Nizhny Novgorod Region (Russia) under anthropogenic changes in landscapes over the last hundred years

Ecosystem Transformation ◽

10.23859/estr-211009 ◽

2021 ◽

Vol 4 (4) ◽

pp. 32-41

Author(s):

Stanislav K. Korb

Keyword(s):

Russian Regions ◽

Gamma Diversity ◽

Natural Conditions ◽

Boreal Species ◽

Long Term Monitoring ◽

Near Future ◽

First Time ◽

Term Monitoring ◽

Nizhny Novgorod Region

The hundred-year dynamics of gamma diversity and butterflies’ abundance have been assessed for the first time in Russia for the Nizhny Novgorod Region. According to analyzed data, we forecast that no significant change in the number of 104 species of butterflies is expected, the number of 33 species in the near future is likely to increase, and the number of 11 species will continue to decline in the near future. A decrease in abundance of 23 steppe and arcto-boreal species is also expected. The reasons for the decrease in the number of species are considered, supported by the long-term monitoring dataset. Extrapolation of our conclusions for Russian regions with similar conditions (Kirov, Ivanovsk, Vladimir, Kostroma, Penza, and Ulyanovsk regions and the Republics of Mari El, Chuvash, and Mordovia), taking into account the natural conditions of these areas, seems applicable and promising.

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Birds of La Plata Island, Machalilla National Park, Ecuador

10.7287/peerj.preprints.2181 ◽

2016 ◽

Author(s):

Diego F Cisneros-Heredia

Keyword(s):

Native Species ◽

National Park ◽

Passer Domesticus ◽

La Plata ◽

Sula Granti ◽

Sula Leucogaster ◽

Phoebastria Irrorata ◽

First Time ◽

Term Monitoring

La Plata Island, Machalilla National Park, is located 30 km off the Ecuadorian coast. In June 2000, I surveyed the avifauna of La Plata Island. In total I observed 57 species of birds (25 families). At least 17 species are known to breed on the island; in fact, for mainland Ecuador, Waved Albatross Phoebastria irrorata, Red-billed Tropicbird Phaethon aethereus, Nazca Booby Sula granti, and Red-footed Booby Sula sula only breed in La Plata. Long-tailed Mockinbird subspecies Mimus longicaudatus platensis is the only endemic bird taxon of the island. House Sparrow Passer domesticus is the only non-native species of the island. Brown Booby Sula leucogaster, Ecuadorian Ground-Dove Columbina buckleyi, Little Woodstar Chaetocercus bombus and Yellow-bellied Elaenia Elaenia flavogaster are reported for the first time on the island. Isla de La Plata maintains an important biodiversity, and it is necessary to implement conservation, management and tourism plans on a sustainable way along with long-term monitoring studies of the fauna and flora.

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Analysis of laboratory methods for monitoring of tick-borne encephalitis natural foci

Sanitarnyj vrač (Sanitary Inspector) ◽

10.33920/med-08-2109-02 ◽

2021 ◽

pp. 26-32

Author(s):

Olga Vitalievna Melnikova ◽

Yuliya Nikolaevna Trushina ◽

Renat Viktorovich Adelshin ◽

Nikolay Vasilievich Yakovchits ◽

Evgeniy Ivanovich Andaev ◽

...

Keyword(s):

Baikal Region ◽

Ixodid Ticks ◽

Ixodes Persulcatus ◽

Isolation And Identification ◽

Tick Borne Encephalitis ◽

Natural Foci ◽

Group 2 ◽

Tick Borne Encephalitis Virus ◽

Tbev Infection ◽

Group 1

Introduction. Ixodid ticks simultaneously are hosts and vectors of tick-borne encephalitis virus (TBEV), presenting a high risk to humans. Monitoring of the vectors part of TBEV population is usually held by means of express analysis methods (ELISA and PCR), but only isolation and identification of infectious virus is reliable evidence of TBEV circulation in the natural foci. Objectives — to demonstrate the TBEV infection rates of Ixodid ticks from natural TBE foci of Baikal Region, based on comprehensive study, including ELISA, PCR and isolation of virus on laboratory mice (LM) model. Methods. Questing adult Ixodid ticks (n = 20 111, mainly — Ixodes persulcatus Schulze, 1930), were collected in TBE natural foci of Baikal Region during 2013–2020. The suspension on saline solution was prepared from the each tick and analyzed by ELISA first. The samples with positive ELISA results were verified in PCR-RT. Furthermore, randomly selected samples with negative ELISA results were analyzed by PCR. Suspensions with positive ELISA and PCR results have been inoculated to suckling LM intracerebrally. Results. The samples with positive PCR results have been divided into two groups: group 1 — all suspensions with positive ELISA results, group 2 — randomly selected samples with negative ELISA results. The positive PCR results in group 1 made up 70.5 % with average Ct rate 24.9. The positive PCR results in group 2 have been obtained in 2.2 % of cases with average Ct rate 30.7. The isolation on LM model was more successful in group 1 (25.8 vs 13.0 %; р < 0.01; df = 69). Conclusion. ELISA is more useful for study of large amounts of ticks during monitoring of natural TBE foci, offering insight into the epidemically important vectors rate. To get the more full assessment of the ticks’ infection rate one must use ELISA and PCR simultaneously, and sum the results into general rate. For high strains isolation results the LM should be inoculated with the suspensions, which had shown positive both ELISA and PCR results.

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