In episode 10 of his podcast on the pandemic, Vivek Goel – a renowned public health expert and founding head of Public Health Ontario, which was set up in response to the 2003 SARS outbreak – explains how vaccines work, why they take so long develop and when we can expect to see a vaccine against this coronavirus. Note: The information in this podcast is current as of the posting date. Listeners should consult their local public health agency for the latest information in their jurisdiction. Producer: Lisa Lightbourn Host & Writer: Vivek Goel Photo: Retha Ferguson/Pexels