Article
Microbiology
Estelle Menu, Lora Kopec, Lea Luciani, Sophie Legrand, Coralie L'Ollivier
Summary: Toxocara spp. are parasitic nematodes that cause human toxocariasis, with five main features including ocular toxocariasis, visceral larva migrans syndrome, covert toxocariasis, common toxocariasis, and neurotoxocariasis. Diagnosis is based on clinical symptoms, history, and serology, but distinguishing active infection from past exposure remains a challenge. A study on avidity tests showed potential for differentiation, but further standardization and larger studies are needed for routine clinical use.
Article
Parasitology
Marie-Kristin Raulf, Daniela Jordan, Herbert Auer, Jens M. Warnecke, Bernd Lepenies, Christina Strube
Summary: This study evaluated the newly developed Anti-Toxocara-ELISA and Anti-Toxocara-Westernblot prototypes, which showed high sensitivity and specificity, indicating high reliability of these newly developed tests.
Article
Microbiology
Manuel Uribe, Lisa Segeritz, Manuela Schnyder, Anja Taubert, Carlos Hermosilla, Sara Lopez-Osorio, Agustin Gongora-Orjuela, Jenny J. Chaparro-Gutierrez
Summary: This study is the first large-scale survey on seroprevalence of Angiostrongylus vasorum in dogs from Colombia.
Article
Medicine, General & Internal
Wilmer Cristobal Guzman-Vilca, Gustavo A. Quispe-Villegas, Fritz Fidel Vascones Roman, Antonio Bernabe-Ortiz, Rodrigo M. Carrillo-Larco
Summary: This study compared cardiovascular disease risk prediction models in Peruvian adults and found that the laboratory-based and non-laboratory-based models had similar predictions. The non-laboratory-based model could be used to assess CVD risk in the Peruvian population.
Article
Parasitology
Vamilton Alvares Santarem, Giovanni Kalempa Panazzolo, Louise Bach Kmetiuk, Orlei Jose Domingues, Isabella Braghin Ferreira, Roberto Teixeira de Souza Filho, Joao Henrique Farinhas, Fernando Rodrigo Doline, Susana Angelica Zevallos Lescano, Leandro Meneguelli Biondo, Rogerio Giuffrida, Alexander Welker Biondo, Giovani Marino Favero
Summary: The high vulnerability and seroprevalence observed in quilombola communities in Brazil highlight the need for a One Health approach to detect, monitor, and prevent infection by Toxocara spp. in both human and dog populations.
PARASITES & VECTORS
(2023)
Article
Infectious Diseases
Mohammad Zibaei, Zahra Hatami, Farzaneh Firoozeh, Fatemeh Bakhshipour, Abolfazl Miahipour, Alireza Soleimani, Elham Shokri
Summary: This study aimed to estimate the prevalence of Toxocara infection among people living with HIV in Alborz province, Iran using serological and molecular methods. The results showed that 11.4% of HIV-infected individuals had positive serology for Toxocara species, and PCR analysis confirmed Toxocara DNA in 3 samples.
BMC INFECTIOUS DISEASES
(2023)
Article
Medicine, General & Internal
Guillermo Z. Martinez-Perez, Sonjelle Shilton, Patricia Silvia Mallma Salazar, Paola Pflucker Oses, Paola Alejandra Torres-Slimming, Deepshikha Batheja, Abhik Banerji, Amber Mallery, Elena Ivanova Reipold, Cesar Carcamo
Summary: This study assesses the values and attitudes towards the use of rapid SARS-CoV-2 antigen-detection tests for self-testing in Peru. The results show that self-testing is perceived as an acceptable approach, with the majority of respondents willing to use it. Most respondents are also willing to pay for self-testing, and factors such as being female, having higher education, and expressing likelihood to use self-testing are predictors of willingness to pay. The study suggests that health authorities in Peru should facilitate access to self-testing to complement healthcare facilities-led testing efforts for COVID-19.
Article
Multidisciplinary Sciences
Chuan-Chin Huang, Letizia Trevisi, Mercedes C. Becerra, Roger Calderon, Carmen C. Contreras, Judith Jimenez, Leonid W. Lecca, Rosa M. Yataco, Zibiao Zhang, Megan B. Murray
Summary: This study used whole-genome sequencing to investigate the incidence and transmission patterns of tuberculosis (TB) in Lima, Peru. The findings suggest that genomic distances increase as spatial distances increase, and remain high beyond 2 km of separation. Furthermore, there is significant variation in TB incidence and local transmission in specific cells, but these two factors are not closely correlated.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Parasitology
Paula Andreia Fabris Giudice, Susana Angelica Zevallos Lescano, William Henry Roldan Gonzales, Rogerio Giuffrida, Fernanda Nobre Bandeira, Louise Bach Kmetiuk, Andrea Pires dos Santos, Alexander Welker Biondo, Vamilton Alvares Santarem
Summary: This study investigated the prevalence of anti-Toxocara spp. antibodies in cattle from two slaughterhouses in Presidente Prudente, southeastern Brazil, finding that 38.5% of bovine samples were seropositive. Factors associated with seropositivity included the source of beef cattle, the presence of dogs or cats at the farm, and the use of feedlot systems.
PARASITES & VECTORS
(2021)
Article
Multidisciplinary Sciences
Eleonora Kaneva, Georgi Nikolov, Yana Kandova, Bogdan Petrunov
Summary: This study investigated the spread of toxocariasis in people whose professional activities are related to forests. The results showed that these professional activities could be a risk factor for the development of toxocariasis, emphasizing the importance of timely diagnosis and prevention.
COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES
(2022)
Article
Environmental Sciences
Akram Hernandez-Vasquez, Kamyla M. Olazo-Cardenas, Fabriccio J. Visconti-Lopez, Antonio Barrenechea-Pulache
Summary: This study analyzed the 2019 Demographic and Family Health Survey in Peru to assess the individual and contextual factors associated with abdominal obesity (AO). The results showed that older age, being female, having a higher wealth index, and having only secondary education were associated with increased odds of AO. At a contextual level, a higher Human Development Index was also linked to the development of AO. These findings highlight the importance of implementing public health policies targeting these factors to reduce the prevalence of AO and prevent associated noncommunicable diseases.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Infectious Diseases
Thais Cabral Monica, Fernanda Evers, Beatriz Souza Lima Nino, Fernanda Pinto-Ferreira, Jose Wander Bregano, Mariana Ragassi Urbano, Guita Rubinsky-Elefant, Roberta Lemos Freire, Italmar Teodorico Navarro, Regina Mitsuka-Bregano
Summary: The study examined the seroprevalence and risk factors of toxoplasmosis and toxocariasis in schoolchildren in Jataizinho, Parana, revealing associations with factors such as the mother's education level, age, presence of cats in the household, income, and presence of dogs. There was also an association between the two zoonoses, highlighting the importance of implementing control measures to reduce the incidence and risks of sequelae in children.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)
Article
Immunology
Tierra Smiley Evans, Theingi Win Myat, Nang Sarm Hom, Keersten Michelle Ricks, Min Thein Maw, Zaw Min Oo, Aung Than Toe, Nyein Thu Aung, Pyaephyo Aung, Tin Htun Aung, Paul Kuehnert, Kyaw Zin Thant, Ye Tun Win, Wai Zin Thein, Nicole Rae Gardner, Randal Joseph Schoepp, Christine Kreuder Johnson, Hlaing Myat Thu
Summary: The study found that exposure to CCHFV is common in logging communities in Myanmar, with a higher seropositivity associated with exposure to blood and body fluids of wild animals.
EMERGING INFECTIOUS DISEASES
(2021)
Article
Multidisciplinary Sciences
Sari L. Reisner, Alfonso Silva-Santisteban, Ximena Salazar, Jesse Vilela, Lynne D'Amico, Amaya Perez-Brumer
Summary: The study highlighted the challenges faced by transgender men in Lima, including healthcare discrimination, lack of medical gender affirmation services, and unmet mental health needs. Participants viewed health as impacted by social, economic, and legal factors, with peer support playing a crucial role in resilience and well-being.
Article
Parasitology
Vamilton Alvares Santarem, Anahi Chechia do Couto, Susana Zevallos Lescano, William Henry Roldan, Ruana Renostro Delai, Rogerio Giuffrida, Louise Bach Kmetiuk, Alexander Welker Biondo, Sriveny Dangoudoubiyam, Andrea Pires Dos Santos
Summary: This study investigated the seroprevalence and associated risk factors of Toxocara spp. exposure in persons experiencing homelessness and shelter workers in Sao Paulo city, Brazil. The results showed a higher prevalence of Toxocara spp. infection in persons experiencing homelessness compared to shelter workers, with college education being the only protective factor.
PARASITES & VECTORS
(2022)
Article
Immunology
W. H. Roldan, G. R. Elefant, A. W. Ferreira
PARASITE IMMUNOLOGY
(2015)
Article
Parasitology
Lundia Luara Cavalcante Bin, Vamilton Alvares Santarem, Cecilia Braga Laposy, Guita Rubinsky-Elefant, William Henry Roldan, Rogerio Giuffrida
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
(2016)
Article
Immunology
G. R. Elefant, W. H. Roldan, A. Seeboeck, P. Kosma
PARASITE IMMUNOLOGY
(2016)
Article
Immunology
W. H. Roldan, G. R. Elefant, A. W. Ferreira
PARASITE IMMUNOLOGY
(2017)
Article
Parasitology
William H. Roldan, Yrma A. Espinoza
MEMORIAS DO INSTITUTO OSWALDO CRUZ
(2009)
Article
Infectious Diseases
William H. Roldan, Yrma A. Espinoza, Pedro E. Huapaya, Alina F. Huiza, Carlos R. Sevilla, Susana Jimenez
REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO
(2009)
Article
Infectious Diseases
Yrma A. Espinoza, Pedro E. Huapaya, William H. Roldan, Susana Jimenez, Enma P. Abanto, Carlos A. Rojas, Yuri A. Cavero, Cesar A. Gutierrez
REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO
(2010)
Article
Parasitology
William Henry Roldan Gonzales, Dirce Mary Correia Lima Meisel, Fabiana Martins de Paula, Ronaldo Cesar Borges Gryschek
Summary: E/S products from Strongyloides venezuelensis infective larvae showed the highest specificity in detecting serum IgG anti-Strongyloides antibodies by ELISA, making it the best antigenic option for the serodiagnosis of human strongyloidiasis.
Article
Infectious Diseases
Bruna Barroso Gomes, William Henry Roldan Gonzales, Dirce Mary Correa Meisel, Ronaldo Cesar Borges Gryschek, Fabiana Martins de Paula
Summary: The study aimed to evaluate the diagnostic accuracy of surface cuticle antigens of infective larvae of S. venezuelensis extracted with CTAB detergent (L3-CTAB) compared to soluble somatic extracts (L3-SSE) in immunocompetent and immunocompromised individuals. The results showed that using L3-CTAB as an antigenic source in ELISA, the seropositivity rate in immunocompromised patients was 28.13%, while it was 34.38% when using L3-SSE. Therefore, L3-CTAB is simple, practical, and highly sensitive and specific.
REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO
(2023)
Article
Parasitology
W. H. Roldan, F. Martins de Paula, R. C. B. Gryschek
JOURNAL OF HELMINTHOLOGY
(2020)