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World Immunization Week 2021: Spotlight on hepatitis B virus and human papillomavirus

World Immunization Week 2021 Home

To mark World Immunization Week 2021, which is observed on 24–30 April, the International Agency for Research on Cancer (IARC) is highlighting the links between viruses and cancer. In 2018, more than 1 million cases of cancer are estimated to have been caused by infection with hepatitis B virus (HBV) or human papillomavirus (HPV). Both HBV and HPV infections can be prevented by vaccines that are safe and efficacious.

Chronic infection with HBV can cause liver cancer. Infection with HPV can cause several different types of head and neck cancer, and HPV infection is the cause of almost all of the approximately 600 000 cases of cervical cancer diagnosed worldwide per year. IARC scientists are involved in research projects with partners around the world to scale up the implementation of vaccination programmes and to better understand the links between infections and cancer.

In new videos for World Immunization Week, Dr Partha Basu and Dr Catherine De Martel, scientists in the Early Detection, Prevention, and Infections Branch at IARC, describe the important role that vaccination plays in preventing cancers caused by HBV and HPV infections. They also outline the World Health Organization recommendations on these vaccines and present some IARC projects that will enable increased access to the vaccines, especially for people in low- and middle-income countries.

Use the social media tiles provided below to share information and help raise awareness of the links between vaccine-preventable infections and cancer, and read recent IARC studies on HBV, HPV, and cancer.



Dr Partha Basu, Scientist, Early Detection, Prevention, and Infections Branch

Dr Catherine de Martel, Scientist, Early Detection, Prevention, and Infections Branch



World Cancer Report Webinar Series – HPV Vaccination

Dr Gary Clifford, Scientist, Early Detection, Prevention, and Infections Branch



Global Impact of HPV Vaccination with Elisabete Weiderpass

Dr Elisabete Weiderpass, IARC Director

Social media tiles

Social media tiles

IARC research

Recently published IARC research on HBV, HPV, and cancer


HPV and cervical cancer

  • Global estimates of expected and preventable cervical cancers among girls born between 2005 and 2014: a birth cohort analysis
  • Launch of the CBIG-SCREEN project, a collaborative Europe-wide effort to tackle inequalities in cervical cancer screening
  • The role and utility of population-based cancer registries in cervical cancer surveillance and control
  • Eliminating cervical cancer in the COVID-19 era
  • Comparison of breast cancer and cervical cancer stage distributions in ten newly independent states of the former Soviet Union: a population-based study
  • Gender inequalities in cancer among young adults
  • Acquisition, prevalence and clearance of type-specific human papillomavirus infections in young sexually active Indian women: a community-based multicentric cohort study
  • Loop electrosurgical excision procedure (LEEP) plus top hat for HIV-infected women with endocervical intraepithelial neoplasia in Kenya
  • Cognitions and behaviours of general practitioners in France regarding HPV vaccination: a theory-based systematic review
  • Evidence from Japan: HPV vaccination is effective against high-grade cervical lesions
  • Potential for global elimination of cervical cancer: modelled projections of the impact of scaled-up HPV vaccination and cervical screening in 181 countries from 2020 to 2099

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