SvennoJ said:
Do those calculation with excess mortality correct for 'missing' flu deaths Local data from the state of New York show a similar pattern. Although the flu season started a few weeks earlier than usual there, the rate of cases fell sharply and the season ended five weeks early. In Hong Kong, the 2019–20 influenza season was 63% shorter than those of the previous five years, and the number of deaths from lab-confirmed flu was 62% lower. |
It could be the flu season appeared to be subdued (more than it should with social distancing) because of double infections that were tested only for SARS-CoV-2. It's rather common for respiratory viruses to attack as a pack, after all, but few labs outside of clinical studies will attempt codetection as opposed to an elimination process.
That, and perhaps the fact that new strains couldn't be introduced from abroad as effectively. An interesting showcase of viral dynamics, either way.