COVID-19 deaths would not have been even noticed 150 years ago

Many people with poor immune systems have died of infectious diseases
   bacteria: Tuberculosis, Typhoid Fever, . . .
   viruses: Smallpox, HIV, Hepatitius, Spanish Flu, winter flu, Asian Flu, Hong Kong Flu . . . .
   both: pneumonia . . .

2.4 million deaths COVID-19 out of a population of 7.6 billion in the world

TB chart from Progress with TB or a Return to the Dark Ages?

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By the way: TB appears to be both prevented and treated by Vitamin D

• Tuberculosis category listing has 121 items
• Tuberculosis – perhaps all forms are associated with low vitamin D – Dec 2020
• Tuberculosis (multi-drug resistant) was 13.4 X more likely to be quickly cleared with Vitamin D - Meta-analysis Feb 2019
• Million TB deaths annually, yet proven treatments of Vitamin D, sunshine, etc are not used – July 2017
• Tuberculosis treatment greatly helped by injection of 200,000 IU of vitamin D – RCT April 2016
• Tuberculosis -100 percent cure rate with 10,000 IU of vitamin D daily – RCT 2006

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Background

I just finished reading a detective thriller placed in in the UK (1859)
Prince Albert was saved from assignation
   only to die of Typhoid Fever 2 years later.
There were perhaps 20 infectious disease deaths mentioned in the book
The Darwin Affair