ArticlePLoS neglected tropical diseases2018
Estimation of HTLV-1 vertical transmission cases in Brazil per annum.
Article in PLoS neglected tropical diseases, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
30 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.
- Human T-cell lymphotropic virus type 1 (HTLV-1) proposed vaccines: a systematic review of preclinical and clinical studies.BMC infectious diseases · 2023Pooled it
- Prevalence of Human T-Lymphotropic Viruses 1 and 2 in Individuals Infected with Hepatitis C Virus in Belém do Pará, Brazil.Tropical medicine and infectious disease · 2026Article
- Epidemiology and Clinical Outcomes of HTLV-1: A Comprehensive Narrative Review of Endemic and Nonendemic Regions.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2026Review
- Persistent Human T-Lymphotropic Virus Type 1 (HTLV-1) Infection in the Placenta of Pregnant Women.Journal of medical virology · 2025Article
- HTLV-1 and Pregnancy: A Retrospective Study of Maternal and Neonatal Health Outcomes in an Endemic Region of Brazil.Pathogens (Basel, Switzerland) · 2025Observational
- Multicenter cross-sectional study of HTLV-1 prevalence and associated risk factors in epidemiologically relevant groups across Brazil.Frontiers in public health · 2025Article
- Stability and Perpetuation of Human T-Lymphotropic Virus 1 (HTLV-1) in Intrafamilial Transmissions of Infection in an Endemic Region of the Brazilian Amazon: A Pilot Study.Journal of tropical medicine · 2025Article
- Article
- Clinical Features and Survival Outcome in Aggressive-Type Adult T-Cell Leukemia/Lymphoma Patients: Real-Life Experience of a Single Center from an HTLV-1 Endemic Country.Medicina (Kaunas, Lithuania) · 2024Observational
- Making HTLV-1 and those affected visible.Nature microbiology · 2024Article
- Seroprevalence of maternal peripartum human T-cell lymphotropic virus type-1 infection: a systematic review and meta-analysis of the Nigerian literature.Clinical and experimental pediatrics · 2023Article
- How Can We Prevent Mother-to-Child Transmission of HTLV-1?International journal of molecular sciences · 2023Review
- Development of a Novel HTLV-1 Protease: Human Fcγ1 Recombinant Fusion Molecule in the CHO Eukaryotic Expression System.Applied biochemistry and biotechnology · 2023Article
- Clinical and Public Health Implications of Human T-Lymphotropic Virus Type 1 Infection.Clinical microbiology reviews · 2022Review
- Oral health and quality of life of people living with human T-cell leukemia virus-1 in Salvador, Brazil: a cross-sectional study.Clinical oral investigations · 2022Article
- Spread of Human T-Lymphotropic Virus 1 and 2 Among Relatives of People Who Use Illicit Drugs in Northern Brazil.Frontiers in microbiology · 2022Article
- A Qualitative Study Exploring Perceptions to the Human T Cell Leukaemia Virus Type 1 in Central Australia: Barriers to Preventing Transmission in a Remote Aboriginal Population.Frontiers in medicine · 2022Article
- Multi-Epitope Protein as a Tool of Serological Diagnostic Development for HTLV-1 and HTLV-2 Infections.Frontiers in public health · 2022Article
- A Review of the Prevention of Mother-to-Child Transmission of Human T-Cell Lymphotrophic Virus Type 1 (HTLV-1) With a Proposed Management Algorithm.Frontiers in medicine · 2022Review
- Blocking HTLV-1/2 silent transmission in Brazil: Current public health policies and proposal for additional strategies.PLoS neglected tropical diseases · 2021Review
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBrazil has at least 800,000 HTLV-1 infected individuals. HTLV-1 can be transmitted via sexual intercourse, contact with blood and from mother to child, mainly by breastfeeding. Treatments for the high morbidity/mortality associated diseases (ATL and HAM/TSP) are limited, therefore, infection prevention is of utmost importance. However, antenatal screening is not routinely performed in Brazil. A lack of data regarding the number of individuals infected via breastfeeding impairs the development of government policies. The objective is to estimate the number of HTLV-1 infections occurring annually due to mother to child transmission (MTCT) in Brazil, nationally and regionally. METHODOLOGY: To estimate HTLV-1 MTCT in Brazil the following variables are modelled: number of births, prevalence of HTLV-1 infection in pregnant women, breastfeeding duration rate and transmission risk according to breastfeeding period. The number of cases of HAM/TSP and ATL attributable to MTCT are also estimated. PRINCIPAL
findingsIn 2008, there were 2,934,828 live births in Brazil. HTLV prevalence in pregnant women in Brazil ranges between 0.1-1.05% by region. An estimated 16,548 HTLV-1 infected women are pregnant each year. According to the breastfeeding pattern and HTLV-1 prevalence of each region there are an estimated 3,024 new cases of HTLV-1 infection due to MTCT annually of which 2,610 are preventable through infant feeding advice. These 3,024 transmissions will result in 120-604 cases of ATL and 8-272 of HAM/TSP. North-East region comprises the high number of MTCT cases, followed by South-East. CONCLUSIONS/SIGNIFICANCE: A high number of new HTLV-1 infections due to MTCT occur every year in Brazil. Antenatal screening and avoiding breastfeeding are essential to prevent subsequent development of HTLV-1-associated diseases.
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