L-R: Deputy CEO, Gavi, The Vaccine Alliance, Anuradha Gupta; Director, Division of Administration, United Nations, Clemens Adams; Director General, World Health Organisation (WHO), Dr Tedros Adhanom Ghebreyesus; GAVI Champion for Africa & Founder, Avon Medical, Dr Awele Elumelu and CEO, GAVI, The Vaccine Alliance, Dr Seth Berkley, at a conference to champion increased vaccine coverage, targeting underimmunised nations, in Geneva on Tuesday