He chaired the following sessions:

• (1) Scientific session: “Expanding HPV vaccine use beyond girls and young women: who should receive the HPV vaccine next?” (Thursday, March 19)
• (2) Free communications session: “Epidemiology IV” (Friday, March 20)

He also delivered two oral presentations:

• (1) Should boys be vaccinated in addition to girls? Results from Mathematical Modelling analyses
• (2) Potential population-level impact of universal infant HPV vaccination in Low- and Lower-Middle-Income Countries

Marc presented:

1. “Mathematical modelling to advise HPV prevention“, on October 23, during the “Public Health Workshop 03: Implementation Strategies to Support HPV Prevention: How Do We Get There?” session.
2. “Potential population-level impact of universal infant HPV vaccination in Low- and Lower-Middle-Income Countries (LMICs): A Mathematical Modelling Analysis“, on October 25, during the “Expanding HPV Vaccine Use Beyond Who Targets: Who Should Receive HPV Vaccine Next?” session.
3. “What should be the priority for secondary target groups for HPV immunization in LMICs? More Girls & Women“, on October 25, during the “Hot Topic Debates in Basic Science, Clinical Science and Public Health” session.

Phornnaphat Chertchinnapa, PhD candidate co-supervised by Marc Brisson, presented:

1. “Population-level impact and cost-effectiveness of switching from 2-dose 2-valent to 1-dose 9-valent HPV vaccination in Thailand“, on October 25, during the “Public Health: Oral Abstracts Session 05: Public Health Impacts of HPV Vaccines” session.

• Marc Brisson: “Modelling cervical cancer inequalities worldwide with and without enhanced HPV vaccination and screening efforts (SY03.01)”.

Session Chair:

• Marc Brisson co-chaired the session: “Cracking the Code: Mathematical Models in STI & HIV Research” (OA07).

Posters:

• Sullivan Evain: “Substantial Increase in the Proportion of Heterosexual Females Who Ever Had Anal Sex Over Generations in Canada” (PP04.52).
• Marianne Gratton: “Substantial Rise in Anal Cancer Projected Among Heterosexual Females Due to Increasing Anal Sex Practice Over Generations in Canada: A Modeling Study” (PP04.62).

Mélanie presented:

Session chairs:
Marc and Mélanie also chaired two sessions each:

• Brisson M, Laprise JF, Drolet M, et al. ‘Population-level impact of switching to 1-dose human papillomavirus vaccination in high-income countries: examining uncertainties using mathematical modeling.’
• Burger EA, Laprise JF, Portnoy A, et al. ‘Population-level health impact of hypothetical waning 1-dose human papillomavirus vaccination and 2-dose mitigation strategies in a high cervical cancer burden setting.’

• Marc delivered 2 oral presentations.
  1. ‘Modelling cervical cancer global inequalities with and without enhanced HPV vaccination and screening efforts’ presented on November 12 during the Prevention of HPV-related Diseases session.
  2. ‘Current efforts in building capacity in HPV modelling: An Integrated Knowledge Translation Approach’ presented on November 15 at the Special Interest Satellite Symposium.
• Mélanie gave a talk titled ‘Increases in lesions and cervical cancers caused by non-vaccine HPV types are expected in the vaccination era without type replacement: insights from mathematical modeling’ on November 13 in the Modeling the Health Impact and Cost-Effectiveness of Vaccination and Screening session.
• Elodie presented a poster titled ‘Prioritizing HPV vaccination strategies in 67 low- and lower-middle income countries based on efficiency at preventing cervical cancer: a modelling analysis.’

• Mélanie Drolet presented virtually on June 11: “Optimal HPV vaccination strategies in low- and lower-middle income countries (LMICs): Numbers needed to vaccinate to prevent one cervical cancer”

• Optimal HPV vaccination strategies in LMICS to reach cervical cancer elimination
• Population-level impact and herd effects following the introduction of human papillomavirus vaccination programmes

• Mélanie presented “New evidence from modelling” in the session “One-dose vaccination: what do we know, what will we know and what are the remaining evidence gaps?”
• Marc co-chaired the sessions “One-dose vaccination: what do we know, what will we know and what are the remaining evidence gaps?” and “Economics and modelling” and Mélanie co-chaired the session “Epidemiology 1”.

• Jean-François Laprise made an oral presentation on the “Potential impact of switching from a 2-dose to 1-dose routine HPV vaccination program in high-income countries: A mathematical modeling study using North America as an example”.
• Élodie Bénard made a poster presentation on the “Potential impact of one-dose HPV vaccination in low-and middle-income countries: a modelling analysis”.

Congratulations to the laureates from our team:

• Marc Brisson who was awarded the Ambassadeur étoile (Star Ambassador) Prize for his international outreach and leadership.

• Mélanie Drolet who was awarded the Employée de recherche étoile (Star Research Employee) Prize for her internationally recognized expertise, her exceptional scientific productivity and her positive influence on her teammates.

• The Group of Biostatisticians composed of Myrto Mondor, Caty Blanchette, Éric Demers and Xavier Neveu who was awarded the Groupe collaboratif (Collaborative Group) Prize. This group has provided essential, high quality and constant support in many projects for the past 20 years which has contributed to the success of several CRCHU research groups.

• Impact of HPV vaccination and cervical screening on cervical cancer elimination: a comparative modelling analysis in 78 low-income and lower-middle-income countries [ Lancet ]
• Mortality reductions and lives saved on the path to eliminating cervical cancer in 78 Low and Lower-Middle Income Countries: Comparative modelling of impact of achieving WHO targets for scaling up vaccination, cervical screening and cancer treatment services [ Lancet ]