This World Health Day, World Health Organisation (WHO) is calling on everyone to participate in building a fairer, healthier world. Matshidiso Moeti The COVID-19 pandemic has shone a light on inequalities between countries. Amid shortages of essential supplies, African countries have been pushed to the back of the queue in accessing COVID-19 test kits, personal protective equipment and now vaccines. Of the 548 million COVID-19 vaccine doses administered worldwide, Africa only had 11 million or 2%, whereas the continent accounts for around 17% of the global population. There are also inequities within countries. Discrimination based on gender, place of residence, income, educational level, age, ethnicity and disability disadvantage vulnerable populations. Recent data from 17 African countries show, for example, that a person with secondary school education is three times as likely to have access to contraception as someone who has not attended school. Those in the highest economic quintile are five times more likely to deliver their babies in health facilities and have their babies vaccinated with BCG compared to those in the lowest quintile. To improve this situation, we need to act on the social and economic determinants of health, by working across sectors to improve living and working conditions, and access to education, particularly for the most marginalised groups. Communities need to be engaged as partners, through their networks and associations, to shape and drive health and development interventions. A key challenge in overcoming inequities is that there is limited data showing who is being missed and why. To address this, national health information systems need to capture age, sex and equity stratified data. This information can then be used to inform decision and policy-making. At WHO, we are working with countries to strengthen capacities to collect, manage and use data, and to enhance monitoring and action to address avoidable inequities. In the past year we have disseminated technical guidance on gender, equity and COVID-19 and trained 30 country teams in gender and health equity integrated programming. The teams are using skills gained to support equitable health response, including to deal with gender-based violence in the context of COVID-19. Investment is also needed to accelerate progress towards universal health coverage, to protect individuals from financial hardship in accessing needed care and to improve service coverage. Most African countries have initiated reforms in these areas believing that these reforms will in turn contribute to building more resilient health systems and societies. Moving forward, leaders need to work together to address inequities in their own countries and abroad in the spirit of international solidarity. Specifically, on COVID-19 vaccines, we strongly encourage pharmaceutical companies to expand their manufacturing capacities to overcome current supply shortages. We also encourage wealthy countries to share their doses with poor ones, so that the most-at-risk popula