ianj <ianj at zipworld.com.au> wrote:
>I want to ask Peter:
I'd like to address a couple of these things if you don't mind. I work
with an organism that is mostly passed via food so I know a little about
>1. is the evidence to support the 'hygienic food' leads to 'poor immunity'
People can only develop antibodies to organisms that they have been
exposed to - via vaccination or to exposure. I can't give you a food-
borne pathogen example but I can give you two others: polio outbreaks
in the US and the diptheria outbreak in the former Soviet Union in
Polio has been called the disease of development because it has only
become a problem BECAUSE of good hygine. Before the improvements in
sanitation children were exposed to polio (via water) as infants and
when they were not nearly as susceptible to active infection. They
received antibodies from their mother via breast milk. When they
grew older and were exposed to the virus and susceptible to the
devistating effects it can have on the central nervous system they
were protected. Children who were not exposed as infants came down
with the disease.
>2. a number of large outbreaks may not be prevented by refrigeration, is
>that not so?
While most large outbreaks are due to food processor error, most people
get food poisoning from poor food handling and storage practices. The
MMWR issues a report describing the reported foodborne diseases that
have occurred in the US.
>3. do you also believe that 'hygienic food' gives pathogens the opportunity
>to grow to higher levels than they would otherwise (no competition)? Do you
>have evidence for that?
Well, isn't that how we grow single cultures? By eliminating other
Joan Shields jshields at uci.eduhttp://www.ags.uci.edu/~jshields
University of California - Irvine School of Social Ecology
Department of Environmental Analysis and Design
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