I'm going to toss this out there for consideration because the blog post(s) probably won't make it out soon enough. Take it or leave it, you won't hurt my feelings by having a different view.
♃ + ♇ = expansion of disease
♃ + ♇ = expansion of disease
1351: Black Death begins to peter-out. In September 1350 there was a ♄☌♇ in
. Nodes would leave 
in late 1351. Europe would suffer redoubts every 20 years while the Grand Conjunctions were in water signs.



Spring 1920: 4th wave of the Spanish Flu in limited locations, tapering off by autumn. Nodes had shifted to 
mid-1919.
Sep 1921: ♃☌♄ in
, though they were within conjunction range at the start of the year. Nodes just about clear the Via Combusta by here.


Sep 1921: ♃☌♄ in

All that said, the present danger in the wake of this most recent ♃☌♇ isn't negated.
The ♃☌♄ in
chart for Washington DC with ♇ loosely ☌ 17
MC (a crucial degree in pandemic charts), with
lurking in H12 makes me wonder if an end or long continuance is indicated.
The ♃☌♄ in



My point is that we might be overlooking a notable factor (♃☌♄) arriving earlier than might be expected. If Jupiter lifts the lid then Saturn may put the lid down firmly or at least quell expansion.