Gavi, the Vaccine Alliance, supports vaccines against 17 infectious diseases. Gavi is co-leading COVAX, the vaccines pillar of the Access to COVID-19 Tools Accelerator. Fact-based content. Trusted information.
What causes a virus to change to a new variant? What is the impact on Covid-19 vaccines? How can we prevent new variants? Why getting vaccinated matters? Learn more with WHO. Your questions answered. Official WHO website.