World Health Organization Podcas‪t‬ World Health Organization, Department of Communications

Infectious disease outbreaks are no longer just about bacteria and viruses, but also the social and economic world we create.

Research can put a human face on health emergencies and help us respond to them more effectively.

Evidence is not enough to shape health policy and practice. We also need to consider bioethics to take the right action for society.

Is microcephaly just the tip of an enormous iceberg? Dr Vanessa van der Linden was the first doctor to make the connection between Zika virus infection and babies born with microcephaly.

How can epidemiology help solve some of the mysteries around Zika virus transmission and the rare but serious neurological disorders associated with it, in particular Guillain-Barr頳yndrome and microcephaly?

One in four people develop some kind of mental illness at some point in their lives. WHO's Mental health atlas 2011 examines the extent of mental health needs and services around the world.