Social distancing: is 2 metres enough?

Will a vaccine against the SARS-CoV-2 coronavirus be forthcoming, and what other measures are effective at fighting Covid-19? We're setting great store by social distancing, but is 2 metres going far enough? Chris Smith joins Radio New Zealand National's Kim Hill to discuss the latest developments in the evolving coronavirus situation, including the UK lockdown extension, and other therapeutic strategies to aid people stricken by the virus...