How much % is needed for #HerdImmunity? Not 60-70%, probably 10-20%. It depends on the variance in susceptibility - not everybody has the same risk to get infected. COVID takes the low-hangig fruits first.
Seasonality of #COVID is underappreciated. Most human viral disease occur in distinct cycles. This is especially true for respiratory infections. We don´t know the reason for this, but it´s NOT simply “the weather”.
Regular seasonal variance is the rule, not the exception!