https://aspe.hhs.gov/cdc-influenza-deaths-request-correction-rfc
"US data on influenza deaths are false and misleading. The Centers for Disease Control and Prevention (CDC) acknowledges a difference between flu death and flu associated death yet uses the terms interchangeably. Additionally, there are significant statistical incompatibilities between official estimates and national vital statistics data. Compounding these problems is a marketing of fear—a CDC communications strategy in which medical experts "predict dire outcomes" during flu seasons."
APPLY TO MONKEYPOX DATA REPORTS.
Older textbooks even admit things were on decline before certain vaxs were introduced (But of course it isn't worded to admit that outright). And as you said nutrition ad hygiene. If people are starving and living in filth (throw your toilet waste out the 2nd window onto the main streets anyone?) Why wouldn't people have ill health?
Excellent points.