ArticleJournal of medical entomology2017
Rickettsia parkeri and "Candidatus Rickettsia andeanae" in Questing Amblyomma maculatum (Acari: Ixodidae) From Mississippi.
Article in Journal of medical entomology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 21 citations in OpenAlex.
- Efficacy of oral afoxolaner against Amblyomma maculatum infestations in dogs.Parasite (Paris, France) · 2025Article
- Critical roles ofInfection and immunity · 2024Article
- Efficacy of a topical combination of esafoxolaner, eprinomectin and praziquantel against Amblyomma maculatum infestations in cats.Parasite (Paris, France) · 2024Article
- Evaluating the Clinical and Immune Responses to Spotted Fever Rickettsioses in the Guinea Pig-Tick-Rickettsia System.Current protocols · 2022Article
- Multiplex TaqManPathogens (Basel, Switzerland) · 2022Article
- Four Tick-Borne Microorganisms and Their Prevalence inPathogens (Basel, Switzerland) · 2021Article
- Ticks infesting dogs and cats in North America: Biology, geographic distribution, and pathogen transmission.Veterinary parasitology · 2021Review
- International Rickettsia Disease Surveillance: An Example of Cooperative Research to Increase Laboratory Capability and Capacity for Risk Assessment of Rickettsial Outbreaks Worldwide.Frontiers in medicine · 2021Review
- Reproductive incompatibility between Amblyomma maculatum (Acari: Ixodidae) group ticks from two disjunct geographical regions within the USA.Experimental & applied acarology · 2020Article
- Scarcity of Hepatozoon americanum in Gulf Coast tick vectors and potential for cultivating the protozoan.Veterinary parasitology, regional studies and reports · 2020Article
- Spotted Fever GroupInfection and immunity · 2019Article
- Diversity of spotted fever group rickettsiae and their association with host ticks in Japan.Scientific reports · 2019Article
- Amblyomma maculatum-associated rickettsiae in vector tissues and vertebrate hosts during tick feeding.Experimental & applied acarology · 2019Article
- Transmission of Amblyomma maculatum-Associated Rickettsia spp. During Cofeeding on Cattle.Vector borne and zoonotic diseases (Larchmont, N.Y.) · 2018Article
- Tick microbial communities within enriched extracts of Amblyomma maculatum.Ticks and tick-borne diseases · 2018Article
- Suspected and Confirmed Vector-Borne Rickettsioses of North America Associated with Human Diseases.Tropical medicine and infectious disease · 2018Review
- Comparative vertical transmission of Rickettsia by Dermacentor variabilis and Amblyomma maculatum.Ticks and tick-borne diseases · 2017Article
Corrections and comments
- Erratum issued
Authors and funding
9 authors at 1 institution in 1 country.
Funding
Abstract
Amblyomma maculatum Koch (Acari: Ixodidae), the primary vector for Rickettsia parkeri, may also be infected with a rickettsia of unknown pathogenicity, "Candidatus Rickettsia andeanae." Infection rates with these rickettsiae vary geographically, and coinfected ticks have been reported. In this study, infection rates of R. parkeri and "Ca. R. andeanae" were evaluated, and rickettsial DNA levels quantified, in 335 questing adult A. maculatum collected in 2013 (n = 95), 2014 (n = 139), and 2015 (n = 101) from Oktibbeha County, MS. Overall infection rates of R. parkeri and "Ca. R. andeanae" were 28.7% and 9.3%, respectively, with three additional A. maculatum (0.9%) coinfected. While R. parkeri-infected ticks were detected all three years (34.7% in 2013; 13.7% in 2014; 43.6% in 2015), "Ca. R. andeanae" was not detected in 2013, and was detected at rates of 10.8% in 2014, and 15.8% in 2015. Interestingly, rickettsial DNA levels in singly-infected ticks were significantly lower in "Ca. R. andeanae"-infected ticks compared to R. parkeri-infected ticks (P < 0.0001). Thus, both infection rates and rickettsial DNA levels were higher for R. parkeri than "Ca. R. andeanae." Infection rates of R. parkeri were also higher, and "Ca. R. andeanae" lower, here compared to A. maculatum reported previously in Kansas and Oklahoma. As we continue to monitor infection rates and levels, we anticipate that understanding temporal changes will improve our awareness of human risk for spotted fever rickettsioses. Further, these data may lead to additional studies to evaluate potential interactions among sympatric Rickettsia species in A. maculatum at the population level.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.