[ConsentofGoverned]

"the case of malaria, TB, and waterborne -- most of the dead comprise those who've not been innoculated through the various programs of "AIDE" that have been going on in Africa (say, from America) for as long as I can recall?"

There is no vaccination for those diseases TB, malaria.
What are you talking about?

[Alia]

Yes, there is innoculation (vaccine) against TB. My own kids had those. Then, there are also anti-malaria agents should one acquire malaria.

Speznetz asked a good question. He obviously has some insight into what causes the "age gap". I was speculating as to a reason why the age gap. I'm hoping he'll provide more insight.

[Dust in the Wind]

What if I have been vaccinated with BCG?

BCG is a vaccine for TB. This vaccine is not widely used in the United States, but it is often given to infants and small children in other countries where TB is common. BCG vaccine does not always protect people from getting TB.

If you were vaccinated with BCG, you may have a positive reaction to a TB skin test. This reaction may be due to the BCG vaccine itself or due to infection with the TB bacteria. Your positive reaction probably means you have been infected with TB bacteria if
You recently spent time with a person who has active TB disease; or
You are from an area of the world where active TB disease is very common (such as most countries in Latin America and the Caribbean, Africa, Asia, Eastern Europe, and Russia); or
You spend time where TB disease is common (homeless shelters, migrant farm camps, drug-treatment centers, health care clinics, jails, prisons).

SOURCE= http://www.cdc.gov/nchstp/tb/faqs/qa.htm