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  1. Oropouche Virus (OROV): Expanding Threats, Shifting Patterns, and the Urgent Need for Collaborative Research in Latin America

    Article • Viruses, February 2025, MDPI AG

    PhD, MD André Ricardo Ribas Freitas

  2. A Case of Vertical Transmission of Oropouche Virus in Brazil

    Article • The New England Journal of Medicine and Surgery and the Collateral Branches of Science, November 2024, New England Journal of Medicine (NEJM/MMS)

    PhD, MD André Ricardo Ribas Freitas

  3. Excess mortality associated with chikungunya epidemic in Southeast Brazil, 2023

    Article • Frontiers in Tropical Diseases, October 2024, Frontiers

    PhD, MD André Ricardo Ribas Freitas

  4. Vertical Transmission of Oropouche Virus in a Newly Affected Extra-Amazon Region: A Case Study of Fetal Infection and Death in Ceará, Brazil

    Article • September 2024, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  5. High Mortality Associated with Chikungunya Epidemic in Southeast Brazil, 2023

    Article • July 2024, Cold Spring Harbor Laboratory Press

    PhD, MD André Ricardo Ribas Freitas

  6. How much of the current serious arbovirus epidemic in Brazil is dengue and how much is chikungunya?

    Article • The Lancet Regional Health - Americas, June 2024, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  7. Chikungunya in Brazil: An epidemic of high cost for private healthcare, 2017

    Article • Tropical Medicine & International Health, August 2022, Wiley

    PhD, MD André Ricardo Ribas Freitas

  8. Seroprevalence of Chikungunya Virus, Jamaica, and New Tools for Surveillance

    Article • Emerging Infectious Diseases, August 2022, Centers for Disease Control and Prevention (CDC)

    PhD, MD André Ricardo Ribas Freitas

  9. Comparative bioavailability study with two sodium valproate tablet formulations administered under fasting conditions in healthy subjects

    Article • International Journal of Clinical Pharmacology and Therapeutics, May 2022, Dustri-Verlgag Dr. Karl Feistle

    PhD, MD André Ricardo Ribas Freitas

  10. Chikungunya Death Risk Factors in Brazil, in 2017: A case-control study

    Article • PLOS One, April 2022, PLOS

    PhD, MD André Ricardo Ribas Freitas

  11. Chikungunya

    Article • January 2022, Springer Science + Business Media

    PhD, MD André Ricardo Ribas Freitas

  12. Gas6 drives Zika virus-induced neurological complications in humans and congenital syndrome in immunocompetent mice

    Article • Brain Behavior and Immunity, October 2021, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  13. The emergence of novel SARS-CoV-2 variant P.1 in Amazonas (Brazil) was temporally associated with a change in the age and sex profile of COVID-19 mortality: A population based ecological study

    Article • The Lancet Regional Health - Americas, September 2021, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  14. A prospective, multicentre, cohort study to assess the incidence of dengue illness in households from selected communities in Brazil (2014–2018)

    Article • International Journal of Infectious Diseases, July 2021, Elsevier

    Guilherme Calvet , PhD, MD André Ricardo Ribas Freitas, Dr GUILHERME Amaral CALVET

  15. The increase in the risk of severity and fatality rate of covid-19 in southern Brazil after the emergence of the Variant of Concern (VOC) SARS-CoV-2 P.1 was greater among young adults without pre-existing risk conditions

    Article • April 2021, Cold Spring Harbor Laboratory Press

    PhD, MD André Ricardo Ribas Freitas

  16. A emergência da nova variante P.1 do SARS-CoV-2 no Amazonas (Brasil) foi temporalmente associada a uma mudança no perfil da mortalidade devido a COVID-19, segundo sexo e idade

    Article • March 2021, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  17. Variantes emergentes do SARS-CoV-2 e suas implicações na saúde coletiva

    Article • InterAmerican Journal of Medicine and Health, February 2021, Sociedade Regional de Ensino e Saude LTDA

    PhD, MD André Ricardo Ribas Freitas

  18. The Emergence of Novel SARS-CoV-2 Variant P.1 in Amazonas (Brazil) Was Temporally Associated with a Change in the Age and Gender Profile of COVID-19 Mortality

    Article • SSRN Electronic Journal, January 2021, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  19. Seroprevalence, spatial dispersion and factors associated with flavivirus and chikungunya infection in a risk area: a population-based seroprevalence study in Brazil

    Article • BMC Infectious Diseases, November 2020, Springer Science + Business Media

    PhD, MD André Ricardo Ribas Freitas

  20. Factors associated with thrombocytopenia in patients with dengue fever: a retrospective cohort study

    Article • BMJ Open, September 2020, BMJ

    PhD, MD André Ricardo Ribas Freitas, ScD MSc LUCIANE CRUZ LOPES

  21. Fatal Outcome of Chikungunya Virus Infection in Brazil

    Article • Clinical Infectious Diseases, August 2020, Oxford University Press (OUP)

    PhD, MD André Ricardo Ribas Freitas

  22. Covid-19 em contexto: comparação com a mortalidade mensal por causas respiratórias nos estados brasileiros

    Article • InterAmerican Journal of Medicine and Health, April 2020, Sociedade Regional de Ensino e Saude LTDA

    PhD, MD André Ricardo Ribas Freitas

  23. Análise da gravidade da pandemia de Covid-19

    Article • Epidemiologia e Serviços de Saúde, April 2020, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  24. Adequate Placental Sampling for the Diagnosis and Characterization of Placental Infection by Zika Virus

    Article • Frontiers in Microbiology, February 2020, Frontiers

    PhD, MD André Ricardo Ribas Freitas

  25. Chikungunya Case Classification after the Experience with Dengue Classification: How Much Time Will We Lose?

    Article • American Journal of Tropical Medicine and Hygiene, February 2020, American Society of Tropical Medicine and Hygiene

    PhD, MD André Ricardo Ribas Freitas

  26. Classification of chikungunya cases: a proposal

    Article • Revista da Sociedade Brasileira de Medicina Tropical, January 2020, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  27. Estimated mortality rate and leading causes of death among individuals with chikungunya in 2016 and 2017 in Brazil

    Article • Revista da Sociedade Brasileira de Medicina Tropical, January 2020, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  28. Respiratory syncytial virus causes more hospitalizations and deaths in equatorial Brazil than influenza (including during the 2009 pandemic)

    Article • Anais da Academia Brasileira de Ciências, January 2020, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  29. Tracking excess deaths associated with the COVID-19 epidemic as an epidemiological surveillance strategy-preliminary results of the evaluation of six Brazilian capitals

    Article • Revista da Sociedade Brasileira de Medicina Tropical, January 2020, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  30. Health care in Amazon communities for education and awareness about health in low resource settings

    Article • European Journal of Public Health, November 2019, Oxford University Press (OUP)

    PhD, MD André Ricardo Ribas Freitas

  31. Chikungunya: time to change the paradigm of a non-fatal disease.

    Article • April 2019, PeerJ

    PhD, MD André Ricardo Ribas Freitas

  32. Chikungunya: time to change the paradigm of a non-fatal disease.

    Article • April 2019, PeerJ

    PhD, MD André Ricardo Ribas Freitas

  33. ZIKV-Specific NS1 Epitopes as Serological Markers of Acute Zika Virus Infection

    Article • The Journal of Infectious Diseases, April 2019, Oxford University Press (OUP)

    PhD, MD André Ricardo Ribas Freitas

  34. Editorial

    Article • InterAmerican Journal of Medicine and Health, March 2019, Sociedade Regional de Ensino e Saude LTDA

    PhD, MD André Ricardo Ribas Freitas

  35. Excess deaths associated with the 2014 chikungunya epidemic in Jamaica

    Article • Pathogens and Global Health, January 2019, Taylor & Francis

    PhD, MD André Ricardo Ribas Freitas, Patrick Gérardin

  36. Biological view of vaccination described by mathematical modellings: from rubella to dengue vaccines

    Article • Mathematical Biosciences and Engineering, January 2019, American Institute of Mathematical Sciences (AIMS)

    PhD, MD André Ricardo Ribas Freitas

  37. Excess Mortality and Causes Associated with Chikungunya, Puerto Rico, 2014–2015

    Article • Emerging Infectious Diseases, December 2018, Centers for Disease Control and Prevention (CDC)

    PhD, MD André Ricardo Ribas Freitas

  38. Seroprevalence of Chikungunya Virus after Its Emergence in Brazil

    Article • Emerging Infectious Diseases, September 2018, Centers for Disease Control and Prevention (CDC)

    PhD, MD André Ricardo Ribas Freitas

  39. Transmission Dynamics and Disease Severity in Children Infected With East Central South African (ECSA) or ECSA-diverged Clades of Chikungunya Virus

    Article • Clinical Infectious Diseases, August 2018, Oxford University Press (OUP)

    PhD, MD André Ricardo Ribas Freitas

  40. Excess mortality in Guadeloupe and Martinique, islands of the French West Indies, during the chikungunya epidemic of 2014

    Article • Epidemiology and Infection, August 2018, Cambridge University Press

    PhD, MD André Ricardo Ribas Freitas

  41. Excess mortality profile during the Asian genotype chikungunya epidemic in the Dominican Republic, 2014

    Article • Transactions of the Royal Society of Tropical Medicine and Hygiene, August 2018, Oxford University Press (OUP)

    PhD, MD André Ricardo Ribas Freitas

  42. A Machine Learning Application Based in Random Forest for Integrating Mass Spectrometry-Based Metabolomic Data: A Simple Screening Method for Patients With Zika Virus

    Article • Frontiers in Bioengineering and Biotechnology, April 2018, Frontiers

    PhD, MD André Ricardo Ribas Freitas

  43. Bangladesh and Rwanda: a case for a high burden of influenza in tropical countries?

    Article • March 2018, PeerJ

    PhD, MD André Ricardo Ribas Freitas

  44. Bangladesh and Rwanda: a case for a high burden of influenza in tropical countries?

    Article • March 2018, PeerJ

    PhD, MD André Ricardo Ribas Freitas

  45. Spread, circulation and predominance of chikungunya virus East/Central/South African genotype in Northeast and Southeast Brazil

    Article • March 2018, PeerJ

    PhD, MD André Ricardo Ribas Freitas

  46. Spread, circulation and predominance of chikungunya virus East/Central/South African genotype in Northeast and Southeast Brazil

    Article • March 2018, PeerJ

    PhD, MD André Ricardo Ribas Freitas

  47. Excess of Mortality in Adults and Elderly and Circulation of Subtypes of Influenza Virus in Southern Brazil

    Article • Frontiers in Immunology, January 2018, Frontiers

    PhD, MD André Ricardo Ribas Freitas

  48. Excess deaths associated with the chikungunya epidemic of 2014 in Jamaica were higher among children under 5 and over 40 years of age, an analysis based on official data.

    Article • December 2017, Cold Spring Harbor Laboratory Press

    PhD, MD André Ricardo Ribas Freitas

  49. Excess mortality in Guadeloupe and Martinique, islands of the French West Indies, during the chikungunya epidemic of 2014

    Article • December 2017, Cold Spring Harbor Laboratory Press

    PhD, MD André Ricardo Ribas Freitas

  50. Serum Metabolic Alterations upon Zika Infection

    Article • Frontiers in Microbiology, October 2017, Frontiers

    PhD, MD André Ricardo Ribas Freitas

  51. Surveillance of deaths caused by arboviruses in Brazil: from dengue to chikungunya

    Article • Memórias do Instituto Oswaldo Cruz, August 2017, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  52. Specific Biomarkers Associated With Neurological Complications and Congenital Central Nervous System Abnormalities From Zika Virus–Infected Patients in Brazil

    Article • The Journal of Infectious Diseases, May 2017, Oxford University Press (OUP)

    PhD, MD André Ricardo Ribas Freitas

  53. Excess Mortality Related To Chikungunya Epidemics In The Context Of Co-circulation Of Other Arboviruses In Brazil

    Article • May 2017, Cold Spring Harbor Laboratory Press

    PhD, MD André Ricardo Ribas Freitas

  54. Arboviruses emerging in Brazil: challenges for clinic and implications for public health

    Article • Revista de Saúde Pública, January 2017, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  55. Excess Mortality Related to Chikungunya Epidemics in the Context of Co-circulation of Other Arboviruses in Brazil

    Article • PLoS Currents, January 2017, PLOS

    PhD, MD André Ricardo Ribas Freitas

  56. Could clinical symptoms be a predictor of complications in Zika virus infection?

    Article • The Lancet, July 2016, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  57. Respiratory syncytial virus seasonality in Brazil: implications for the immunisation policy for at-risk populations

    Article • Memórias do Instituto Oswaldo Cruz, March 2016, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  58. Fitting the Incidence Data from the City of Campinas, Brazil, Based on Dengue Transmission Modellings Considering Time-Dependent Entomological Parameters

    Article • PLOS One, March 2016, PLOS

    PhD, MD André Ricardo Ribas Freitas

  59. INTRODUCTION AND TRANSMISSION OF ZIKA VIRUS IN BRAZIL: NEW CHALLENGES FOR THE AMERICAS

    Article • Revista do Instituto de Medicina Tropical de São Paulo, January 2016, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  60. Prevalence, Risk Factors and Molecular Characteristics of Meningococcal Carriage Among Brazilian Adolescents

    Article • The Pediatric Infectious Disease Journal, November 2015, Wolters Kluwer Health

    PhD, MD André Ricardo Ribas Freitas

  61. Chikungunya no Brasil: um desafio emergente

    Article • Revista Brasileira de Epidemiologia, March 2015, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  62. Spinal Cord Schistosomiasis

    Article • January 2013, IntechOpen

    PhD, MD André Ricardo Ribas Freitas

  63. Mortality Associated with Influenza in Tropics, State of São Paulo, Brazil, from 2002 to 2011: The Pre-Pandemic, Pandemic, and Post-Pandemic Periods

    Article • Influenza Research and Treatment, January 2013, Hindawi Publishing Corporation

    PhD, MD André Ricardo Ribas Freitas

  64. Schistosomal myeloradiculopathy in a low-prevalence area: 27 cases (14 autochthonous) in Campinas, São Paulo, Brazil

    Article • Memórias do Instituto Oswaldo Cruz, July 2010, FapUNIFESP (SciELO)

    PhD, MD André Ricardo Ribas Freitas

  65. Co-infection between the pandemic influenza virus A H1N1 and seasonal influenza A virus in a patient presenting severe acute respiratory disease

    Article • International Journal of Infectious Diseases, March 2010, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  66. Severe acute respiratory disease caused by pandemic influenza A H1N1 virus. A case series of hospitalized patients in Southeastern Brazil during the 2009 epidemic

    Article • International Journal of Infectious Diseases, March 2010, Elsevier

    PhD, MD André Ricardo Ribas Freitas

  67. Clusters of Brazilian spotted fever in São Paulo State, southeastern Brazil. A review of official reports and the scientific literature

    Article • Clinical Microbiology and Infection, December 2009, Elsevier

    PhD, MD André Ricardo Ribas Freitas