Disease transmission dynamics

Mathematical models of infectious diseases -computer simulation of epidemics- enable researchers to study their transmission dynamics, to predict the potential population-level impact of interventions, and to optimize prevention/control programs. So far, my work as mainly focused on HIV and other STBBIs.

• Dynamics of HIV transmission among MSM in Québec.
• Elimination of HCV among HIV co-infected populations in Canada.
• Cervical cancer elimination in high HIV prevalence settings through cancer screening and HPV vaccination.
• Modeling the impact of structural factors on HIV transmission among key populations.
• The contribution of behavior change, contact tracing and vaccinations on mpox outbreaks among gay, bisexual, and other men who have sex with men in Vancouver, Toronto, and Montréal.

Epidemiology and measurements

Measurements of population health and its determinants is a key step to benchmark, monitor progress, and devise appropriate health policies. I use models to analyze and pool complex surveys for diverse health outcomes/indicators.

• Monitoring of UNAIDS’ first 95 (proportion of people living with HIV aware of their status) in sub-Saharan Africa.
• Global, regional, and national estimates of violence against women statistics.
• Temporal trends in HIV stigma at global, regional, and national levels.

Impact and economic evaluations

By comprehensively assessing the effects - intended and unintended - of a health program, impact evaluations can generate new evidence, promote accountability, and prioritize public health actions. Combined with complimentary cost-effectiveness analyses, impact evaluation can help policy-makers chose those interventions that provides the biggest bang for the buck.

• Cost-effectiveness of accelerated HIV response scenarios in Côte d’Ivoire.
• Model-based impact evaluation of pre-exposure prophylaxis to reduce HIV transmission among men who have sex with men in Montréal.
• Impact of scaling-up HIV self-testing on HIV transmission in West Africa.
• Impact of rapid diagnostic tests to reduce syphilis transmission in Arctic communities.