We know that in the 1918 flu pandemic the second wave was far more deadly than when it first arrived. This time around in Australia, it seems we may avoid a terrible second wave but that may make us more vulnerable to a third wave. By the end of this year and into 2021, we'll have little natural immunity, a vaccine may not be available and there's a danger that complacency may have set in. On today's show: * Norman goes on a bit of a tear about masks, and says if we all wore them we could re-open society much more quickly * How should social distancing work on flights? * Will any second or third coronavirus wave be better or worse than the 1918 flu?