How should people with existing medical conditions arm themselves against coronavirus?

For most people, trying to avoid Covid-19 means washing hands more often.

But for those living with serious health conditions, avoiding the virus can be a matter of life and death.

Ollie Lewington from Milton Keynes has cystic fibrosis and has decided to self-isolate as he has had a double lung transplant.

Keme Nzerem went to meet him, while keeping his distance.