Letter
Immunology
Gaspar Peniche-Lara, Victor Lara-Perera
Summary: A case of human rickettsiosis caused by Rickettsia parkeri strain Atlantic Rainforest in Mexico is reported. Diagnosis was confirmed using PCR and sequence analysis. Health providers should be aware of the clinical manifestations of rickettsioses in this region.
EMERGING INFECTIOUS DISEASES
(2022)
Article
Microbiology
Michelle E. J. Allerdice, Christopher D. Paddock, Joy A. Hecht, Jerome Goddard, Sandor E. Karpathy
Summary: This study investigated the genetic diversity within North American strains of Rickettsia parkeri s.s. and the genetic relationships between R. parkeri s.s. and R. parkeri s.l. The results showed distinct genetic clades within these strains, indicating a phylogeographic organization and potential public health risks associated with R. parkeri in the Americas.
MICROBIOLOGY SPECTRUM
(2021)
Review
Infectious Diseases
Alessandra Castro Rodrigues, Marcio Botelho de Castro, Marcelo Bahia Labruna, Matias Pablo Juan Szabo
Summary: Two tick-borne rickettsioses, caused by Rickettsia rickettsii and Rickettsia parkeri, occur in Brazil. Rickettsia rickettsii causes a severe disease with high mortality, while Rickettsia parkeri causes a milder febrile disease with eschar at the tick bite site. Clinical diagnosis of rickettsiosis is challenging, especially during the early stages, and proper recognition of eschar as a clinical tool is crucial.
TICKS AND TICK-BORNE DISEASES
(2023)
Article
Immunology
Abdulsalam Adegoke, Jose M. C. Ribeiro, Sidney Brown, Ryan C. Smith, Shahid Karim
Summary: This study identified five distinct phagocytic and non-phagocytic hemocyte populations in ticks and showed that phagocytic hemocytes play a crucial role in eliminating bacterial infection. The research also revealed that an intracellular tick-borne pathogen modifies tick cellular immune responses by infecting phagocytic hemocytes.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Microbiology
Anne-Marie L. Ross, John Stokes, Claire E. Cross, Navatha Alugubelly, Andrea S. Varela-Stokes
Summary: Spotted Fever Rickettsiosis (SFR), caused by SFGR, is challenging to diagnose. Guinea pig serves as a valuable model for studying SFR due to its immune system similarity to humans. By optimizing the qPCR assays, SFGR can be accurately detected in in vivo studies.
Article
Infectious Diseases
Andre de Abreu Rangel Aguirre, Ivaneide Nunes da Costa, Paula Frassinetti Medeiros de Paulo, Marcos Valerio Garcia, Jansen Fernandes Medeiros
Summary: This study detected the presence of Rickettsia parkeri strain Atlantic rainforest in ticks in the Amazon biome for the first time, providing evidence of the circulation of a pathogenic spotted fever group Rickettsia in this region. This finding offers substantial information for public health authorities to understand the species of Rickettsia that may be related to Amazon spotted fever cases.
TICKS AND TICK-BORNE DISEASES
(2022)
Article
Microbiology
Melina Garcia Guizzo, Khemraj Budachetri, Abdulsalam Adegoke, Jose M. C. Ribeiro, Shahid Karim
Summary: The Gulf Coast tick is an important tick vector that can transmit several tick-borne pathogens, including Rickettsia parkeri. This study found that the persistence of R. parkeri within the tick population is facilitated by the tick tissues' oxidant/antioxidant balance and the non-pathogenic tick microbiome. The interaction between the tick and the pathogen leads to transcriptional alterations in both the tick and the pathogen, allowing for pathogen transmission and persistence within the tick population.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Immunology
Abdulsalam Adegoke, Deepak Kumar, Khemraj Budachetri, Shahid Karim
Summary: This study explores the microbial communities in different developmental stages and tissues of Gulf-Coast ticks (Amblyomma maculatum) and investigates the impact of blood meal and Rickettsia parkeri infection on microbiome composition, diversity, and functionality. The results show that Rickettsia, Francisella, and Candidatus_Midichloria are key players in the core microbiome of Am. maculatum, and blood meal and R. parkeri infection lead to an increase in bacterial abundance in tick tissues.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Public, Environmental & Occupational Health
Marco Torres-Castro, Sokani Sanchez-Montes, Pablo Colunga-Salas, Henry Noh-Pech, Enrique Reyes-Novelo, Roger Rodriguez-Vivas
Summary: Tick-borne rickettsioses caused by various strains of Rickettsia bacteria have been reported in humans in the American continent. Recent cases of R. parkeri-rickettsiosis have been identified in Yucatan, Mexico, leading to increased interest in surveillance of this disease among the population due to varying morbidity and mortality rates.
ZOONOSES AND PUBLIC HEALTH
(2022)
Review
Infectious Diseases
Carlos Ramiro Silva-Ramos, Marylin Hidalgo, Alvaro A. Faccini-Martinez
Summary: Rickettsia parkeri rickettsiosis is the second most prevalent tick-borne disease in the Americas, mainly affecting males aged 18-64 with a history of tick exposure. Clinical features include fever, eschar, rash, headache, and myalgia, while laboratory parameters often show abnormalities with most cases requiring tetracyclines-class antibiotics and only a small percentage needing hospitalization, all cases demonstrating full clinical recovery.
TICKS AND TICK-BORNE DISEASES
(2021)
Article
Public, Environmental & Occupational Health
Jasmine R. Hensley, Maria L. Zambrano, Amanda J. Williams-Newkirk, Gregory A. Dasch
Summary: Despite high levels of carriage of these tick-borne agents by Gulf Coast ticks and Lone Star ticks, exchange of these Rickettsia, Coxiella, and Francisella agents between the two tick species appears to be an infrequent event in a natural setting.
VECTOR-BORNE AND ZOONOTIC DISEASES
(2021)
Article
Entomology
Goudarz Molaei, Eliza A. H. Little, Noelle Khalil, Bryan N. Ayres, William L. Nicholson, Christopher D. Paddock
Summary: The discovery of Rickettsia parkeri-infected Gulf Coast ticks in Connecticut, at the northern range limit of the species, emphasizes the importance of tick surveillance and the public health challenges posed by the geographic expansion of tick vectors and pathogens.
JOURNAL OF MEDICAL ENTOMOLOGY
(2021)
Article
Public, Environmental & Occupational Health
Jose R. Ramirez-Garofalo, Shannon R. Curley, Caitlin E. Field, Charles E. Hart, Saravanan Thangamani
Summary: The research aimed to determine the habitat associations and pathogen status of Amblyomma maculatum ticks in NYC. Ticks were collected from two parks on Staten Island and tested for pathogens, with a high rate of Rickettsia parkeri infection found. This underscores the importance of monitoring and understanding the presence of this tick species in urban environments.
VECTOR-BORNE AND ZOONOTIC DISEASES
(2022)
Article
Entomology
Connie R. Johnson, Loganathan Ponnusamy, Allen L. Richards, Charles S. Apperson
Summary: This study investigated the host feeding patterns and prevalence of Rickettsia parkeri infection for the primary vector tick species, Amblyomma maculatum, and other sympatric tick species in North Carolina. The results showed a high prevalence of R. parkeri infection in A. maculatum, with cotton rats being the most common bloodmeal host.
JOURNAL OF MEDICAL ENTOMOLOGY
(2022)
Article
Ecology
Catherine A. Lippi, Samuel Canfield, Christina Espada, Holly D. Gaff, Sadie J. Ryan
Summary: Geographic approaches are increasingly used to assess the risk of tick-borne diseases and inform public health decision-making. This study explored the potential geographic range of a marsh rice rat species and found considerable overlap with the distribution of a tick species in the southeastern United States, highlighting the need for extended surveillance efforts and attention to the role of hosts in transmission cycles.
Article
Public, Environmental & Occupational Health
Gerardo Alvarez-Hernandez, Naomi Drexler, Christopher D. Paddock, Jesus D. Licona-Enriquez, Jesus Delgado-de la Mora, Anne Straily, Maria del Carmen Candia-Plata, Denica I. Cruz-Loustaunau, Vanessa A. Arteaga-Cardenas
TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE
(2020)
Article
Entomology
Joy A. Hecht, Michelle E. J. Allerdice, Sandor E. Karpathy, Hayley D. Yaglom, Mariana Casal, R. Ryan Lash, Jesus Delgado-de la Mora, Jesus D. Licona-Enriquez, David Delgado-de la Mora, Kathleen Groschupf, James W. Mertins, Amanda Moors, Don E. Swann, Christopher D. Paddock
JOURNAL OF MEDICAL ENTOMOLOGY
(2020)
Article
Entomology
Michelle E. J. Allerdice, Alyssa N. Snellgrove, Joy A. Hecht, Kris Hartzer, Emma S. Jones, Brad J. Biggerstaff, Shelby L. Ford, Sandor E. Karpathy, Jesus Delgado-de la Mora, David Delgado-de la Mora, Jesus D. Licona-Enriquez, Jerome Goddard, Michael L. Levin, Christopher D. Paddock
EXPERIMENTAL AND APPLIED ACAROLOGY
(2020)
Letter
Rheumatology
Andrea Wisniowski-Yanez, Gerardo Zavala-Garcia, Gabriela Hernandez-Molina, Alejandra Gonzalez-Duarte, Jesus Delgado-de la Mora, Arturo Angeles-Angeles, Eduardo Martin-Nares
Letter
Immunology
Ximena Leon-Lara, Alejandro Campos-Murguia, Pablo Leon-Cabral, Andrea Tello-Mercado, Noel Salgado-Nesme, Jesus Delgado de la Mora, Stephanie Boisson- Dupuis, Jacinta Bustamante, Lizbeth Blancas-Galicia
JOURNAL OF CLINICAL IMMUNOLOGY
(2021)
Editorial Material
Surgery
Eduardo Martin-Nares, Jesus Delgado-de la Mora, Braulio Martinez-Benitez, Gabriela Hernandez-Molina
Article
Medicine, General & Internal
R. Ryan Lash, Patrick K. Moonan, Brittany L. Byers, Robert A. Bonacci, Kimberly E. Bonner, Matthew Donahue, Catherine V. Donovan, Heather N. Grome, Julia M. Janssen, Reed Magleby, Heather P. McLaughlin, James S. Miller, Caroline Q. Pratt, Jonathan Steinberg, Kate Varela, Greta L. Anschuetz, Paul R. Cieslak, Veronica Fialkowski, Aaron T. Fleischauer, Clay Goddard, Sara Jo Johnson, Michelle Morris, Jill Moses, Allison Newman, Lauren Prinzing, Alana C. Sulka, Puthiery Va, Matthew Willis, John E. Oeltmann
Summary: Contact tracing is crucial in limiting SARS-CoV-2 transmission, but gaps in the process can lead to missed opportunities to prevent COVID-19. A study conducted in US local health departments and Indian Health Service Units found that testing named contacts was effective in identifying cases, but contact tracing had limited impact on reducing transmission due to issues like cases not being reached for interview or not naming any contacts. These findings are important for resource allocation and prioritization of public health efforts.
Letter
Rheumatology
E. Martin-Nares, C. Vargas-Serafin, J. Delgado-de la Mora, D. Montante-Montes de Oca, P. C. Grayson, E. Larios, J. C. Crispin
SCANDINAVIAN JOURNAL OF RHEUMATOLOGY
(2022)
Article
Health Policy & Services
James S. Miller, Robert A. Bonacci, R. Ryan Lash, Patrick K. Moonan, Peter Houck, J. Joyous Van Meter, Malcolm Butler, Teresa Everson, Brittany Morrison, Melissa Sixberry, Amy Person, John E. Oeltmann
Summary: Most individuals with COVID-19 reported having no close contacts. Increasing community engagement, public messaging, and addressing barriers to participation are crucial for COVID-19 case investigation and contact tracing to effectively contribute to controlling the SARS-CoV-2 pandemic.
JOURNAL OF COMMUNITY HEALTH
(2021)
Letter
Pediatrics
Jesus D. Licona-Enriquez, Sokani Sanchez-Montes, David Delgado-de la Mora, Jesus Delgado-de la Mora
BOLETIN MEDICO DEL HOSPITAL INFANTIL DE MEXICO
(2020)
Letter
Immunology
Sokani Sanchez-Montes, Gerardo G. Ballados-Gonzalez, Alejandra Hernandez-Velasco, Hector M. Zazueta-Islas, Marlene Solis-Cortes, Haydee Miranda-Ortiz, Julio C. Canseco-Mendez, Edith A. Fernandez-Figueroa, Pablo Colunga-Salas, Andres M. Lopez-Perez, Jesus Delgado-de la Mora, Jesus D. Licona-Enriquez, David Delgado-de la Mora, Sandor E. Karpathy, Christopher D. Paddock, Claudia Rangel-Escareno
EMERGING INFECTIOUS DISEASES
(2019)
Article
Medicine, General & Internal
Miguel Garcia-Grimshaw, Diego Posadas-Pinto, Jesus Delgado-de la Mora, Amado Jimenez-Ruiz
CUREUS JOURNAL OF MEDICAL SCIENCE
(2019)
Letter
Immunology
Katelin C. Jackson, Thomas Gidlewski, J. Jeffrey Root, Angela M. Bosco-Lauth, R. Ryan Lash, Jessica R. Harmon, Aaron C. Brault, Nicholas A. Panella, William L. Nicholson, Nicholas Komar
EMERGING INFECTIOUS DISEASES
(2019)
Letter
Immunology
Jesus Delgado-de la Mora, Sokani Sanchez-Montes, Jesus D. Licona-Enriquez, David Delgado-de la Mora, Christopher D. Paddock, Lorenza Beati, Pablo Colunga-Salas, Carmen Guzman-Cornejo, Maria L. Zambrano, Sandor E. Karpathy, Andres M. Lopez-Perez, Gerardo Alvarez-Hernandez
EMERGING INFECTIOUS DISEASES
(2019)
