Exploring early attempts to tackle infection and how we used microbes to fight back.

In the wake of the swine flu outbreak, virologist Dr Mike Leahy uses over 50 years of BBC archive to explore the history of pandemics - infectious diseases caused by bacteria, viruses and parasites.

Who are the people behind the international anti-Covid-vaccine movement and why are they doing it? This journey inside the astonishing world of the anti-vaxxers finds out.

Unreported World meets the health workers risking their lives to vaccinate children against polio in Pakistan, where the Taliban have issued a decree against vaccination