Perhaps not though, epidemics are strange things. They turn up, wreak their damage and often just as mysteriously disappear.
I think not enough attention is paid to vulnerability and immunity and their subsequent effects. Those who die first time round aren't available to die again. Those who were seriously ill have been duly warned and will be especially careful to stay safe subsequently to avoid a repeat of their suffering. Many of those who were only mildly affected may well have gained some degree of immunity.
And finally, of those who weren't affected, many may have a permanent natural immunity to that particular virus.
If we had immunity from pessimism the outlook would be very much brighter.
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