Area of research
Modeling and Simulation · Epidemiology
Research interest
Research interests include Medicine, Coronavirus disease 2019 (COVID-19), Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), Population, Pediatrics, and Demography.
Effectiveness of BA.1- and BA.4/BA.5-containing bivalent COVID-19 mRNA vaccines against symptomatic SARS-CoV-2 infection during the BA.5-dominant period in Japan
Immune escape and waning immunity of COVID-19 monovalent mRNA vaccines against symptomatic infection with BA.1/BA.2 and BA.5 in Japan
COVID-19 vaccine effectiveness against severe COVID-19 requiring oxygen therapy, invasive mechanical ventilation, and death in Japan: A multicenter case-control study (MOTIVATE study)
Transmission dynamics of seasonal influenza in a remote island population
Letter to the editor: Importance of considering high-risk behaviours in COVID-19 vaccine effectiveness estimates with observational studies
Coronavirus Disease 19 (COVID-19) Vaccine Effectiveness Against Symptomatic Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection During Delta-Dominant and Omicron-Dominant Periods in Japan: A Multicenter Prospective Case-control Study (Factors Associated with SARS-CoV-2 Infection and the Effectiveness of COVID-19 Vaccines Study)
Clinical, epidemiological, and spatial features of human rabies cases in Metro Manila, the Philippines from 2006 to 2015
A prospective observational study of community-acquired bacterial bloodstream infections in Metro Manila, the Philippines
Unique characteristics of new complete blood count parameters, the Immature Platelet Fraction and the Immature Platelet Fraction Count, in dengue patients
Diphtheria in Metro Manila, the Philippines 2006–2017: A Clinical, Molecular, and Spatial Characterization
Hospitalisations and outpatient visits for undifferentiated fever attributable to scrub typhus in rural South India: Retrospective cohort and nested case-control study
Mid-upper arm circumference predicts death in adult patients admitted to a TB ward in the Philippines: A prospective cohort study
Infant contact in day-care centres in Vietnam: A cross-sectional study to understand infant infection risk
Infant contact in day-care centres in Vietnam: A cross-sectional study to understand infant infection risk
The impact of control strategies and behavioural changes on the elimination of Ebola from Lofa County, Liberia
Exposure to paternal tobacco smoking increased child hospitalization for lower respiratory infections but not for other diseases in Vietnam
Building prognostic models for adverse outcomes in a prospective cohort of hospitalised patients with acute leptospirosis infection in the Philippines
Risk for Death among Children with Pneumonia, Afghanistan
Population-Based Incidence Rates of First-Ever Stroke in Central Vietnam
Diagnostic Accuracy of Recombinant Immunoglobulin-like Protein A-Based IgM ELISA for the Early Diagnosis of Leptospirosis in the Philippines
Potential effect of virus interference on influenza vaccine effectiveness estimates in test-negative designs
Early indication for a reduced burden of radiologically confirmed pneumonia in children following the introduction of routine vaccination against Haemophilus influenzae type b in Nha Trang, Vietnam
Pneumococcal colonization and carriage
Animal livestock and the risk of hospitalized diarrhoea in children under 5 years in Vietnam