The subsequent waves will continue to attack in some descending order of age? Interesting.
We have to be realists about the hot mess we're in. No one knows what the next cycle of contagion brings. The best we can do is preventive medicine, that's long, detailed and hard, one should look at President Kennedy's Moon speech for guidance. That's a far more beneficial strategy than merely treating the symptoms.
When America entered WW I, their game plan was to starve Germany into submission. To do that they had to drastically increase the production of meat, virgin grasslands in Western Kansas were converted to feed lots. In Jan 1918, a strain of flu appeared in Kansas, American authorities weren't particularly worried, they were confident that they could keep it local. They were dead wrong, the virus reached the Western Front where it became turbocharged within the filth of the trenches. As an Armistice was reached (American strategy succeeding), the virus set forth to cut a wide swath across the human population: it went on to kill 52 million people. It killed mostly people between the age of 18 - 50,among the dead were notables like Gustav Klimt and Alexander Scriabin. It was referred to as The Spanish Flu since King Alfonso VIII was one of the first victims, he barely survived. I study in the New England Journal of Medicine published in 2004 concluded that the flu originated in factory farms in Kansas and renamed it The Blue Soldier.