In article ,
RJBL wrote:

The various enteritis illness, some trivial some not so, have increased
in frequency by a couple of orders of magnitude since the 1960's. ...

Oh, really? Do you have any evidence that this is anything more than
a recording artifact? Back in the 1960s, most people didn't call a
doctor for mere D&V, whereas they do now. Related to this, there has
been a HUGE increase in the number of people who are seriously infirm,
because modern medical aid prevents them dying from other causes.

A secondary effect, which particularly affects the serious incidents,
is that the population has much less immunity now than it did then,
because it has not had the exposure. It isn't clear how much that
affects the statistics.


Regards,
Nick Maclaren.