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Vertical transmission of dengue is rare. However, the rapid rise of dengue infection is a risk in pregnancy which can lead to preterm delivery, low birth weight, stillbirth, miscarriage, neonatal morbidity and mortality. Here, we present a case of perinatal transmission of dengue in a term neonate who presented with fever on second day of life and desaturation without respiratory distress. Laboratory findings showed thrombocytopenia, dengue antigen NS1/IgM positive and treatment was started. There was positive maternal history of dengue 10 days prior to delivery. Hence, early investigations with prompt interventions was done leading to uneventful recovery.
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http://dx.doi.org/10.31729/jnma.8771 | DOI Listing |
Appl Biosaf
August 2025
Mahidol-Oxford Tropical Research Medicine Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Introduction: Dengue virus (DENV) poses a significant global health threat, particularly in tropical and subtropical regions, where it is primarily transmitted by spp. mosquitoes. Its biosafety and biosecurity management present unique challenges due to both its vector-borne nature and rare instances of nonvector transmission.
View Article and Find Full Text PDFParasite
September 2025
Parasitology Department, São Paulo University, 1374 Av. Prof. Lineu Prestes, São Paulo, State of São Paulo 05508-000, Brazil.
Understanding why Diptera, such as mosquitoes and sand flies, feed on humans is crucial in defining them as vectors of diseases such as malaria, dengue fever, Zika virus, and leishmaniasis. Determining their attraction to humans (anthropophily) helps in assessing the risk of disease transmission, designing effective vector control strategies, and monitoring the effectiveness of existing control measures. An important question is whether they are specifically attracted to humans in preference to other mammals or whether there is something else at play.
View Article and Find Full Text PDFPLoS One
September 2025
Instituto de Física, Universidade Federal da Bahia (UFBA), Salvador, Bahia, Brazil.
Dengue fever remains a major public health concern, requiring continuous efforts to mitigate its impact. This study investigates the influence of key temperature-dependent parameters on dengue transmission dynamics in Foz do Iguaçu, a tri-border municipality in southern Brazil, using a mathematical model based on a system of ordinary differential equations. The fitted model aligns well with observed data.
View Article and Find Full Text PDFOne Health
December 2025
Department of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany.
Introduction: Climate variability and non-environmental factors such as travel and migration pose an increasing risk of vector-borne infectious diseases to extratropical regions. The European Centre for Disease Prevention and Control has reported autochthonous transmissions of dengue or West Nile virus in Italy, France, Spain, and Germany. Raising awareness and implementing protective measures against mosquitoes will therefore become increasingly relevant in Germany in the future.
View Article and Find Full Text PDFPLoS Negl Trop Dis
September 2025
Environmental Health Group, Faculty of Infectious Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.
Background: Chikungunya virus (CHIKV) is an arbovirus with a significant global public health burden. Delineating the specific contributions of individual behaviour, household, natural and built environment to CHIKV transmission is important for reducing risk in urban informal settlements but challenging due to their heterogeneous environments. The aim of this study was to quantify variation in CHIKV seroprevalence between and within four urban communities in a large Brazilian city, and identify the respective contributions of individual, household, and environmental factors for seropositivity.
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