Rickettsia amblyommatis-infected Amblyomma coelebs parasitizing a human traveler in Rio Grande do Sul, southern Brazil, after returning from the Amazon

Souza, Ugo Araújo; Fagundes-Moreira, Renata; Costa, Francisco Borges; Alievi, Marcelo Meller; Labruna, Marcelo B.; Soares, João Fábio

doi:10.1016/j.tmaid.2022.102328

Cited by 4 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Asia, H. longicornis is a livestock pest that transmit pathogens relevant to human and animal health, but it is also an introduced, and now established, exotic species in the western Pacific Region and the USA [ 43 ]. In South America, A. coelebs is specialized on mammals [ 5 ] and can readily bite humans [ 39 ], but A. dissimile feed exclusively on reptiles and amphibians [ 5 ]. In Africa, H. parmata is a global generalist, while A. tholloni tends to feed on elephants, but both can bite Hominidae, at least occasionally [ 22 ].…”

Section: Discussionmentioning

confidence: 99%

Diversity and phylogeny of the tick-borne bacterial genus Candidatus Allocryptoplasma (Anaplasmataceae)

Ouass,

Boulanger,

Lelouvier

et al. 2023

Parasite

View full text Add to dashboard Cite

The family Anaplasmataceae includes tick-borne bacteria of major public and veterinary health interest, as best illustrated by members of the genera Anaplasma and Ehrlichia. Recent epidemiological surveys have also reported on the presence of a novel putative genus in the Anaplasmataceae, Candidatus Allocryptoplasma, previously described as Candidatus Cryptoplasma in the western black-legged tick, Ixodes pacificus. However, the genetic diversity of Ca. Allocryptoplasma and its phylogenetic relationship with other Anaplasmataceae remain unclear. In this study, we developed a multi-locus sequence typing approach, examining the DNA sequence variation at five genes of Ca. Allocryptoplasma found in ticks. Combining this multi-locus sequence typing and genetic data available on public databases, we found that substantial genetic diversity of Ca. Allocryptoplasma is present in Ixodes, Amblyomma and Haemaphysalis spp. ticks on most continents. Further analyses confirmed that the Ca. Allocryptoplasma of ticks, the Ca. Allocryptoplasma of lizards and some Anaplasma-like bacteria of wild mice cluster into a monophyletic genus, divergent from all other genera of the family Anaplasmataceae. Candidatus Allocryptoplasma appears as a sister genus of Anaplasma and, with the genera Ehrlichia and Neoehrlichia, they form a monophyletic subgroup of Anaplasmataceae associated with tick-borne diseases. The detection of genetically distinct Ca. Allocryptoplasma in ticks of significant medical or veterinary interest supports the hypothesis that it is an emergent genus of tick-borne pathogens of general concern.

show abstract

Section: Discussionmentioning

confidence: 99%

Diversity and phylogeny of the tick-borne bacterial genus Candidatus Allocryptoplasma (Anaplasmataceae)

Ouass,

Boulanger,

Lelouvier

et al. 2023

Parasite

View full text Add to dashboard Cite

show abstract

“…The importance of the recognized tick-associated rickettsial pathogens has increased in the last 30 years. Moreover, the pathogenicity for humans of several species has been continuously described, and novel Rickettsia species of undetermined pathogenicity have been detected in ticks around the world [ 10 , 11 ]. Rickettsia spp.…”

Section: Introductionmentioning

confidence: 99%

Spotted Fever Group Rickettsia spp. Diversity in Ticks and the First Report of Rickettsia hoogstraalii in Romania

Ivan

Matei

Novac

et al. 2022

Veterinary Sciences

View full text Add to dashboard Cite

Tickborne bacterial pathogens have been described worldwide as risk factors for both animal and human health. Spotted fevers caused by Rickettsiae may cause non-specific symptoms, which make clinical diagnosis difficult. The aim of the current study was to evaluate and review the diversity of SFG Rickettsiae in ticks collected in 41 counties in Romania. A total of 2028 questing and engorged ticks collected in Romania belonging to five species were tested by PCR amplification of Rickettsia spp. gltA and 17-D gene fragments: Ixodes ricinus (n = 1128), Dermacentor marginatus (n = 507), D. reticulatus (n = 165), Rhipicephalus rossicus (n = 128) and Haemaphysalis punctata (n = 100). Five Rickettsia species were identified following DNA sequence analysis: R. helvetica, R. monacensis, R. slovaca, R. raoultii, and R. hoogstraalii. The most common species detected was R. monacensis. Moreover, R. hoogstraalii was detected for the first time in Romania and in R. rossicus ticks. The detection of R. raoultii and R. monacensis in questing larvae of Hae. punctata suggests the possible transovarial transmission of these Rickettsia species in ticks. The detection of R. hoogstraalii for the first time in Romania increases the reported SFG Rickettsia diversity in the country.

show abstract

Soft and hard ticks (Parasitiformes: Ixodida) on humans: A review of Brazilian biomes and the impact of environmental change

et al. 2022

View full text Add to dashboard Cite

Rickettsia amblyommatis-infected Amblyomma coelebs parasitizing a human traveler in Rio Grande do Sul, southern Brazil, after returning from the Amazon

Cited by 4 publications

References 14 publications

Diversity and phylogeny of the tick-borne bacterial genus Candidatus Allocryptoplasma (Anaplasmataceae)

Diversity and phylogeny of the tick-borne bacterial genus Candidatus Allocryptoplasma (Anaplasmataceae)

Spotted Fever Group Rickettsia spp. Diversity in Ticks and the First Report of Rickettsia hoogstraalii in Romania

Soft and hard ticks (Parasitiformes: Ixodida) on humans: A review of Brazilian biomes and the impact of environmental change

Contact Info

Product

Resources

About