At the moment, nothing seems to be the way it was. There is a „before" and „during" regarding the pandemic. Many people in the world are impatient while waiting for a COVID-19-vaccine. Why is it taking so long, and because of the pandemic, might it be smart to get a flu shot this fall? In the ETH-Podcast, we talk to two immunologists about these questions: Professor Emma Slack from ETH and Johannes Trück, a pediatrician from Kinderspital Zürich.