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Christos Karatzios

Academic title(s): 

Assistant Professor 

MDCM, FRCPC 

Christos Karatzios
Contact Information
Address: 

Montreal Children’s Hospital
1001 Boulevard, E05 1844
Montreal, Quebec, H4A 3J1

Division: 
Infectious Diseases
Degree(s): 
  • Medicine, McGill University, Montreal, Quebec, Canada, August 1994-June 1998 
  • Pediatric Medical Resident, Montreal Children's Hospital, McGill University Health Centre (MUHC), Montreal, Quebec, Canada, July 1998-June 2001 
  • Chief Pediatric Medical Resident, Montreal Children's Hospital, McGill University Health Centre (MUHC), Montreal, Quebec, Canada, July 2001-June 2002 
  • Pediatric Infectious Diseases Fellowship, Montreal Children's Hospital, McGill University Health Centre (MUHC), Montreal, Quebec, Canada, July 2001-June 2004 
  • Post-Graduate Research Scholar, Green Family Foundation Fellowship, Pediatric HIV, Department of Pediatrics, Division of Infectious Diseases, Jackson Memorial Hospital, University of Miami, Miami, Florida, United States of America, August 2005-August 2006 
Biography: 

Dr. Christos Karatzios is an Assistant Professor in the Department of Pediatrics and in the Division of Infectious Diseases at the Montreal Children's Hospital (McGill University Health Centre) since 2004. Dr. Karatzios chose to be a paediatrician because he loves working with children and since they are more resilient than adults in many ways, he shared that he “cherish to see the fruits of my labour when they get better”. He completed clinical research training in pediatric HIV at the University of Miami, Leonard M. Miller School of Medicine. Additionally, he is a professor at McGill University and the course coordinator of the Infectious Diseases Block of the McGill undergraduate medical curriculum. As a member of the Canadian Pediatric AIDS Research Group, he is involved with perinatal HIV surveillance across Canada. In 2020, Dr. Karatzios worked with the Brighton Collaboration – a WHO and USFDA-partnered group looking at COVID-19 complications in children and as part of this group, published an oft-cited diagnostic guide to recognize post-COVID-19 (and possible post COVID-19 vaccine) Multisystem Inflammatory Syndrome in Children/Adults.

Areas of expertise: 
  • Paediatric Infectious Diseases  
  • Paediatric HIV/AIDS  
  • Paediatric Medicine  
  • Medical Education 
Areas of interest: 

Paediatric HIV/AIDS

Selected publications: 
  • Karatzios C, Scuccimarri R, Chédeville G, Basfar W, Bullard J, & Stein DR. Multisystem Inflammatory Syndrome Following SARS-CoV-2 Vaccination in Two Children. Pediatrics. 2022; e2021055956. 10.1542/peds.2021-055956. https://doi.org/10.1542/peds.2021-055956  
  • Hawkes MT, Brophy J, Lindy S, Singer J, Dieumegard H, Sauve L, Alimenti A, Vaudry W, Seigel S, Tan B, Karatzios C, Lamarre V, Read S, Soudeyns H, Bitnun A. EPIC4 Study Group. Challenges to achieving and maintaining viral suppression among children living with HIV. AIDS. 2020;34(5).687-697. doi: 10.1097/QAD.0000000000002454  
  • Brophy J, Bitnun A, Alimenti A, Lapointe N, Samson L, Read, S, Karatzios C, Dobson S, Moses E, Blitz S, Lipsky N, Ogilvie G, Walmsley S, Raboud J, Money D, for the HPV in HIV Study Group. Immunogenicity and Safety of the Quadrivalent Human Papillomavirus Vaccine in Girls Living with HIV. Ped Infect Dis J. 2017; doi: 10.1097/INF.0000000000001874  
  • Bitnun A, Brophy J, Samson L, Alimenti A, Kakkar F, Lamarre V, Moore D, Karatzios C, Seigel S, Sauve L, Vaudry W, Yudin MH, and Money D, for the Canadian Paediatric and Perinatal AIDS Research Group and the Infectious Diseases Committee of the Society of Obstetricians and Gynaecologists of Canada. Prevention of vertical HIV transmission and management of the HIV-exposed infant in Canada in 2014. Can J Infect Dis Med Microbiol. 2014;25(2):75-77 
Awards, honours, and fellowships: 

Osler Teaching Award for the most effective teacher by the McGill Medicine graduating class, 2014.

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