Tahar KernifThe Pasteur Institute of Algeria
Tahar Kernif
Doctor of Veterinary Science, PhD
About
41
Publications
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2,396
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Citations since 2017
Introduction
Additional affiliations
March 2010 - March 2013
Publications
Publications (41)
At the end of the study of the biodiversity of hard Ticks and the monitoring of the infestation of the dromedaries by these ectoparasites in our study regions (Touggourt, El Oued, and Biskra).
The present study aimed to determine the phenology and predilection sites of ticks
infesting cattle in the western region of Djurdjura (North Algeria) from November 2018 and
October 2020. Nineteen cattle farms located in thirteen localities within four provinces
were visited monthly for two years. Among the 289 examined cattle, 64.36 ± 2.81%
(n=189...
The prevalence and risk factors associated with gastrointestinal parasites in dogs were conducted in Blida, North-Central Algeria. The study was carried out over 131clinically healthy dogs, from March to June 2019, by coprological methods. Of the 131 collected dogs, 61.07% (n=80) were found infected by gastrointestinal parasites. Sixty-four dogs we...
Blastocystis sp. is one of the most common enteric parasites found in humans and many non-human hosts. It is an anaerobic protozoan that belongs to the group of Stramenopiles. Based on phylogenetic analysis of ribosomal DNA genes, at least 17 subtypes (ST1-ST17) are described. The aim of this study was to identify and characterize Blastocystis sp....
Purpose
Surra is a zoonotic disease caused by Trypanosoma evansi (Trypanozoon), a salivary trypanosome native to Africa which affects a wide range of mammals worldwide and causes mortality and significant economic loss. The present study was devoted to the molecular characterization of T. evansi derived from naturally infected dromedary camels in...
Surra, caused by Trypanosoma evansi, is a re-emerging animal trypanosomosis, which is of special concern for camel-rearing regions of Africa and Asia. Surra decreases milk yield, lessens animal body condition score and reduces market value of exported animals resulting in substantial economic losses. A cross-sectional seroprevalence study of dromed...
The study was conducted during tick activity season over a period of 5 years in the Djurdjura Plains, Algeria. A total of 299 cattle (Holstein, Montbeliard, Fleckvieh and crossbred animals) with clinical signs were included in this study. A total of 171 animals were found positive for at least one pathogen by Giemsa‐stained blood smears examination...
Q fever is a widespread zoonotic disease caused by Coxiella burnetii that most commonly infects not only a variety of mammals but also arthropods and in particularly ticks. The aim of this study was to detect C. burnetii infection in camels including ixodid ticks using serological and molecular assays. Between July 2018 to June 2019, blood samples...
Emerging Tick-Borne Bacterial Pathogens, Page 1 of 2
Abstract
Ticks are obligate hematophagous arthropods that are considered to be the second most common vectors of pathogens after the mosquitoes that cause diseases in humans ( 1 ). Two families of ticks are capable of transmitting a broad range of pathogens ( 2 ): Ixodidae (hard ticks) currentl...
Le but de cette étude est d’évaluer la faune ectoparasite des oiseaux synanthropes
et sauvages de cinq régions du nord de l’Algérie. Les collectes comprennent 12 espè-
ces d’oiseaux : Goéland leucophée (Larus michahellis), Chardonneret (Carduelis carduelis),
Merle noir (Turdus merula), Pigeon biset (Columba livia), Rossignol philomèle
(Luscinia meg...
We collected twelve nests of the white stork Ciconia ciconia from the wetland of El-Tarf in the extreme northeast of Algeria during 2008 and 2009, between September and November. The nests were carefully dislocated to collect the different arthropod species contained either at the surface of the nest or in the material used to build the nest. We fo...
The cat flea, Ctenocephalides felis felis (Bouche, 1835) (Siphonaptera: Pulicidae), which is found worldwide and which parasitizes many species of wild and domestic animal, is a vector and/or reservoir of bacteria, protozoa and helminths. To aid in the study of the physiology and behaviour of fleas and of their transmission of pathogens, it would b...
The aim of this study is to evaluate the ectoparasitic fauna from synanthropic and wild birds from five regions of North Algeria. Collections were made from 12 bird species: Yellow-legged Gull (Larus michahellis), Goldfinch (Carduelis carduelis), Blackbird (Turdus merula), Rock Pigeon (Columba livia), Nightingale (Luscinia megarhynchos), Chukar Par...
We collected twelve nests of the white stork Ciconia ciconia from the wetland
of El-Tarf in the extreme northeast of Algeria during 2008 and 2009, between September
and November. The nests were carefully dislocated to collect the different arthropod species
contained either at the surface of the nest or in the material used to build the nest.
We fo...
Aims and Scope New Microbes and New Infections is an offi cial publication of the European Society of Clinical Microbiology and Infectious Diseases (ESCMID). It serves the fi eld as a peer-reviewed, open access journal for rapid dissemination of the latest research, with a particular focus on new genomes, new microbes, and new technology applied to...
Background
Rickettsia africae is the agent of African tick bite fever, a disease transmitted by ticks in sub-Saharan Africa. In Union of the Comoros, a recent study reported the presence of a Rickettsia africae vector but no information has been provided on the circulation of the pathogenic agent in this country.
Methods
To evaluate the possible c...
During the two last years 2012 and 2013, we conducted a surveillance to identify the soft ticks species (Acari: Argasidae) found in nests of Yellow-legged Gull (Larus michahellis), in Wetland from Réghaïa (Algeria) more specifically on the island Agueli, 1 km of the beach Réghaïa. We collected 227 ticks on 31 nests. Carios capensis, soft tick speci...
Bartonella quintana is transmitted by the infected feces of body lice. Recently, this bacterium was detected in cat fleas (Ctenocephalides felis) and in two humans with chronic adenopathy whose only risk factor was contact with cat fleas. In this study, a total of 960 C. felis were divided into 12 groups (2 control groups and 10 infected groups) ea...
Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus Rickettsia. These zoonoses are among the oldest known vector-borne diseases. However, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this...
SUMMARY Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus Rickettsia. These zoonoses are among the oldest known vector-borne diseases. However, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, mak...
A method for rapid species identification of ticks may help clinicians predict the disease outcomes of patients with tick bites and may inform the decision as to whether to administer post-exposure prophylactic antibiotic treatment. We aimed to establish a MALDI-TOF MS spectra database based on the analysis of the legs of 6 tick vectors: Amblyomma...
Argas vespertilionis, an argasid tick associated with bats and bat habitats in Europe, Africa, and Asia has been reported to bite humans; however, studies investigating the presence of vector-borne pathogens in these ticks are lacking. Using molecular tools, we tested 5 A. vespertilionis ticks collected in 2010 from the floor of a bat-infested atti...
Ticks are obligate hematophagous arthropods that have a limited mobility, but can be transported over large geographical distances by wild and domestic mammals and birds. In this study, we analyze the presence of emerging zoonotic bacteria in ticks collected from passerine birds and mammals present in the Camargue, in the south of France, which is...
Our study was carried out using Ixodes ricinus ticks collected from cattle from Tizi-Ouzou and Dermacentor marginatus ticks collected from the vegetation of the Blida region, a tourist site, both regions situated in northern Algeria. The results of real-time quantitative PCR (qPCR) specific for a partial sequence of the citrate synthase gene (gltA)...
We collected ticks from camels in 4 regions of southern Algeria (El Oued, Bechar, Ghardia, and Adrar) from February to October in 2008 and in April of 2011. A total of 307 ticks representing multiple species (including Hyalomma dromedarii, H. marginatum rufipes, H. impeltatum, and H. impressum), was tested for the presence of spotted fever group ri...
The purpose of this article is to overview vector-borne rickettsioses in North Africa, focusing on epidemiologic aspects, clinical features, diagnosis procedures, and treatment. The protective measures, the exposure to risk, and the dynamics of endemic emerging and re-emerging diseases in the region are detailed to minimize the risk when traveling...
Rickettsioses and bartonelloses are arthropod-borne diseases of mammals with widespread geographical distributions. Yet their occurrence in specific regions, their association with different vectors and hosts and the infection rate of arthropod-vectors with these agents remain poorly studied in South-east Asia. We conducted entomological field surv...
To the Editor: Bartonella species are small, gram-negative, fastidious, and hemotropic emerging pathogens that cause various human diseases and circulate between a large variety of mammalian and arthropod vectors. More than 30 Bartonella species have been isolated from humans as well as from wild and domestic animals worldwide (1). B. clarridgeiae...
To the Editor: Plague is a deadly rodent-associated flea-borne zoonosis caused by the bacterium Yersinia pestis (1). Human plague periodically reemerges in so-called plague foci, as illustrated by the 2003 reemergence of human plague in the Oran area, Algeria (2,3). We report emergence of a new plague focus in a remote region of Algeria.
Bartonella species are being recognized as important bacterial human and canine pathogens, and are associated with multiple arthropod vectors. Bartonella DNA extracted from blood samples was obtained from domestic dogs in Algiers, Algeria. Polymerase chain reaction (PCR) and DNA sequence analyses of the ftsZ gene and the 16S-23S intergenic spacer r...
Projects
Projects (5)
(a) identify places where disease needs to be controlled,
(b) learn which cattle breeds do not get sick,
(c) understand why available drugs fail to cure the infection in certain animals,
(d) develop region-specific vaccines to protect animals
(e) develop ecologically friendly compounds against ticks.
Notre objectif était d'étudier l'incidence et la prévalence de cette infection dans des
troupeaux selon leur origine géographique. Etant donné les difficultés de coopérer avec les éleveurs pour un suivi régulier, nous nous sommes limité à l'étude de la prévalence de cette affection. Sur ces troupeaux appartenant à différents propriétaires, nous tenterons de déterminer les facteurs qui favorisent ou qui conditionnent l'apparition de la maladie.
Tropical bovine theileriosis, caused by Theileria annulata, transmitted by ticks of the genus Hyalomma, is a major constraint to cattle production in Algeria. Effective control of the pathogen and vector ticks is based on the identification of infected animals combined with the use of ecological control methods accessible to farmers. This work aims to 1) identify the regions or enzootic zones and tick vectors of T. annulata, 3) Determine the different strains of T. annulata, 4) determine the factors underlying the resistance to theiléricide.
