Public health leader Dr Tom Frieden reflects on the ongoing global pandemic. An expert on infectious disease, Dr Frieden is a former director of the US States Centers for Disease Control and Prevention. He was a leading figure in the global response to the Ebola outbreak and he now heads Resolve to Save Lives, an Initiative of Vital Strategies, an organisation dedicated to the prevention of epidemics. From his New York apartment, Dr Frieden provides his unique insight on the unfolding international situation. He records his response to key moments in the development of the pandemic and the measures being taken to face it in the United States, Africa and across the world.