S. Viridiana Laredo-Tiscareño

Iowa State University

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Javier A. Garza‐Hernández

Universidad Autónoma de Ciudad Juárez

Carlos A. Rodríguez-Alarcón

Universidad Autónoma de Ciudad Juárez

Bradley J. Blitvich

Iowa State University

Jaime R. Adame-Gallegos

Autonomous University of Chihuahua

Chandra S. Tangudu

Iowa State University

Erick de Jesús de Luna-Santillana

Instituto Politécnico Nacional

Diana M. Beristain-Ruiz

Universidad Autónoma de Ciudad Juárez

Rodolfo González-Peña

Autonomous University of Yucatán

Alissa M. Hargett

Iowa State University

Julián E. García‐Rejón

Autonomous University of Yucatán

Cooperative Institutions

Universidad Autónoma de Ciudad Juárez

Iowa State University

Autonomous University of Chihuahua

Instituto Politécnico Nacional

Colorado State University

Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias

Universidad Veracruzana

Universidad Autónoma del Estado de México

Autonomous University of Yucatán

Secretaria de Salud

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Possible Association between Selected Tick-Borne Pathogen Prevalence and Rhipicephalus sanguineus sensu lato Infestation in Dogs from Juarez City (Chihuahua), Northwest Mexico–US Border

Pathogens (2022)

Diana M. Beristain-Ruiz Javier A. Garza‐Hernández Julio Vicente Figueroa Millán José J. Lira-Amaya Andrés Quezada‐Casasola

Tick-borne bacterial pathogens (TBBPs) show a worldwide distribution and represent a great impact on public health. The brown dog tick (Rhipicephalus sanguineus) is a vector of several pathogens that affect dogs and sometimes humans as well. In addition, TBBPs represent a diagnostic challenge and imply financial resources and medical treatment for long periods of time. In the present study, R. sanguineus s. l. was identified as the main tick species naturally parasitizing dogs that inhabit. Juárez City, Chihuahua, in the Paso del Norte region, Mexico-US Border, representing 99.8% of the cases. Additionally, an end-point PCR was performed to search for whether pathogens in R. sanguineus s. l. can transmit in DNA extracted from ticks and dog blood samples. This is the first molecular detection of Rickettsia rickettsi infecting domestic dogs in Mexico; however, other pathogens were also identified, such as Ehrlichia canis and Anaplasma platys in both ticks and dog blood samples, while Anaplasma phagocytophilum was identified only in dog blood samples. Moreover, co-detection in tick pools and co-infection in the analyzed dog blood samples could be found. Similarly, this research showed that dogs were found mostly parasitized by adult female ticks, increasing the possibility of transmission of E. canis.

Rhipicephalus sanguineus

Ehrlichia canis

Anaplasma phagocytophilum

Tick infestation

Rhipicephalus

Babesia canis

10.3390/pathogens11050552

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Citations (16)

FIRST STATE AND NATIONAL RECORDS OF CULICOIDES DEBILIPALPIS AND CULICOIDES REEVESI IN CHIHUAHUA, MEXICO

Journal of the American Mosquito Control Association (2025)

Rodolfo González-Peña S. Viridiana Laredo-Tiscareño Herón Huerta Luis M. Hernández‐Triana Erick de Jesús de Luna-Santillana

ABSTRACT In July 2022, adult female Culicoides were collected from San Buenaventura (54 specimens) and Urique (3 specimens) in Chihuahua, Mexico. Culicoides reevesi and Culicoides debilipalpis were new records for the state, with C. reevesi also being a first for Mexico. The study highlights DNA barcode identification challenges and emphasizes the need for ongoing surveillance along the Mexico-USA border.

Culicoides

Ceratopogonidae

DNA Barcoding

10.2987/24-7207

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Citations (0)

Detection of Multiple Novel Viruses in Argasid and Ixodid Ticks in Mexico

S. Viridiana Laredo-Tiscareño Javier A. Garza‐Hernández Chandra S. Tangudu Wichan Dankaona Carlos A. Rodríguez-Alarcón

10.2139/ssrn.4886654

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Citations (1)

Sexual Transmission of Arboviruses: A Systematic Review

Viruses (2020)

Bradley J. Blitvich Tereza Magalhães S. Viridiana Laredo-Tiscareño Brian D. Foy

Arthropod-borne viruses (arboviruses) are primarily maintained in nature in transmission cycles between hematophagous arthropods and vertebrate hosts, but an increasing number of arboviruses have been isolated from or indirectly detected in the urogenital tract and sexual secretions of their vertebrate hosts, indicating that further investigation on the possibility of sexual transmission of these viruses is warranted. The most widely recognized sexually-transmitted arbovirus is Zika virus but other arboviruses, including Crimean-Congo hemorrhagic fever virus and dengue virus, might also be transmitted, albeit occasionally, by this route. This review summarizes our current understanding on the ability of arboviruses to be sexually transmitted. We discuss the sexual transmission of arboviruses between humans and between vertebrate animals, but not arthropod vectors. Every taxonomic group known to contain arboviruses (Asfarviridae, Bunyavirales, Flaviviridae, Orthomyxoviridae, Reoviridae, Rhabdoviridae and Togaviridae) is covered.

Sexual transmission

Togaviridae

Zika Virus

Flavivirus

10.3390/v12090933

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Citations (29)

Mosquito immune cells enhance dengue and Zika virus dissemination inAedes aegypti

bioRxiv (Cold Spring Harbor Laboratory) (2024)

David R. Hall Rebecca M. Johnson Hyeogsun Kwon Zannatul Ferdous S. Viridiana Laredo-Tiscareño

Mosquito-borne viruses cause more than 400 million annual infections and place over half of the world's population at risk. Despite this importance, the mechanisms by which arboviruses infect the mosquito host and disseminate to tissues required for transmission are not well understood. Here, we provide evidence that mosquito immune cells, known as hemocytes, play an integral role in the dissemination of dengue virus (DENV) and Zika virus (ZIKV) in the mosquito

Zika Virus

Hemolymph

Antibody-dependent enhancement

10.1101/2024.04.03.587950

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Citations (4)

Correction: Beristain-Ruiz et al. Possible Association between Selected Tick-Borne Pathogen Prevalence and Rhipicephalus sanguineus sensu lato Infestation in Dogs from Juarez City (Chihuahua), Northwest Mexico–US Border. Pathogens 2022, 11, 552

Pathogens (2025)

Diana M. Beristain-Ruiz Javier A. Garza‐Hernández Julio Vicente Figueroa Millán José J. Lira-Amaya Andrés Quezada‐Casasola

In the original publication [...]

Rhipicephalus sanguineus

Sensu

Tick infestation

10.3390/pathogens14020153

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Citations (0)

Potential of Neem-Based Varnish as Adulticide of Aedes aegypti Mosquitoes

Southwestern Entomologist (2022)

Glenda A. Sánchez-García S. Viridiana Laredo-Tiscareño Erick de Jesús de Luna-Santillana Jaime R. Adame-Gallegos Carlos A. Rodríguez-Alarcón

Aedes aegypti (L.) (Diptera: Culicidae) is the primary vector of several arboviruses of public health importance worldwide. Resistance to insecticides led to increasing interest in exploring eco-friendly alternatives such as plant extracts used as bioinsecticides. This study describes laboratory research using neem-based varnish against adult Ae. aegypti mosquitoes. Five concentrations (0, 1, 5, 10, and 15% v/v) of neem-based varnish were evaluated against male and female Ae. aegypti by 2 hours of direct exposure. The life span of exposed Ae. aegypti mosquitoes was significantly less. LT50 ranged from 1.98-2.65 and 3.2-6.06 days for males and females, respectively, exposed to 1 to 15% concentrations of neem-based varnish. LT50 of nonexposed male and female mosquitoes were 16.20-19.60 days, respectively. The results indicated that neem-based varnish was very toxic to Ae. aegyipti mosquitoes. This botanical insecticide can be an alternative for biological control of mosquitoes.

10.3958/059.047.0206

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Citations (0)

Arbovirus Surveillance near the Mexico–U.S. Border: Isolation and Sequence Analysis of Chikungunya Virus from Patients with Dengue-like Symptoms in Reynosa, Tamaulipas

American Journal of Tropical Medicine and Hygiene (2018)

S. Viridiana Laredo-Tiscareño Carlos Machaín-Williams Mario A. Rodríguez‐Pérez Javier A. Garza‐Hernández Gloria L. Doria-Cobos

A total of 1,090 residents of the city of Reynosa, Tamaulipas, on the Mexico–U.S. border presented at hospitals and clinics of the Secretariat of Health, Mexico, in 2015 with symptoms characteristic of dengue. Dengue virus (DENV) antigen was detected by enzyme-linked immunosorbent assay in acute sera from 134 (12.3%) patients. Sera from select patients ( N = 34) were also tested for chikungunya virus (CHIKV) RNA by quantitative reverse transcription–polymerase chain reaction. Thirteen (38.2%) patients, including five DENV antigen-positive patients, were positive. Sera from three CHIKV RNA-positive patients were further assayed by virus isolation in cell culture and CHIKV was recovered on each occasion. The genome of one isolate and structural genes of the other two isolates were sequenced. In conclusion, we present evidence of CHIKV and DENV coinfections in patients who live near the Mexico–U.S. border and provide the first genome sequence of a CHIKV isolate from northern Mexico.

10.4269/ajtmh.18-0117

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Citations (13)

Detection of multiple novel viruses in argasid and ixodid ticks in Mexico

Ticks and Tick-borne Diseases (2025)

S. Viridiana Laredo-Tiscareño Javier A. Garza‐Hernández Chandra S. Tangudu Wichan Dankaona Carlos A. Rodríguez-Alarcón

We examined ticks from Mexico using viral metagenomics to increase our understanding of the composition and diversity of the tick virome. The analysis was performed using 3,127 ticks of four Ixodidae spp. and one Argasidae spp. collected in 2019 to 2021 from domestic animals in four states of Mexico (Chiapas, Chihuahua, Guerrero, and Michoacán). All ticks were homogenized and tested for viruses using two approaches. In the first approach, an aliquot of each homogenate underwent two blind passages in Ixodes scapularis (ISE6) cells. Supernatants from all second passage cultures were subjected to polyethylene glycol (PEG) precipitation to enrich for virions then RNAs were extracted from the precipitates and analyzed by unbiased high-throughput sequencing (UHTS). In the second approach, an aliquot of every homogenate was subjected to PEG precipitation then RNAs were extracted and analyzed by UHTS, allowing for the detection of viruses unable to replicate in ISE6 cells. We identified seven novel species of viruses from multiple taxonomic groups (Bunyavirales, Flaviviridae, Nodaviridae, Nyamivirdae, Rhabdoviridae, Solemoviridae, and Totiviridae), some of which are highly divergent from all classified viruses and cannot be assigned to any established genus. Twelve recognized species of viruses were also identified. In summary, multiple novel and recognized viruses were detected in ticks from Mexico, highlighting the remarkable diversity of the tick virome.

10.1016/j.ttbdis.2025.102455

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Citations (0)

Isolation of a novel rhabdovirus and detection of multiple novel viral sequences in Culex species mosquitoes in the United States

Archives of Virology (2022)

Chandra S. Tangudu Alissa M. Hargett S. Viridiana Laredo-Tiscareño Ryan C. Smith Bradley J. Blitvich

Human virome

10.1007/s00705-022-05586-5

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Citations (4)