Massive Increase in USA Food Poisoning Since 1994

Massive Increase in USA Food
Poisoning Since 1994

3 November, ISIS Report, via ngin

Genetic engineered food has increased enormously in the United States
since 1994. Figures released at the end of 1999 showed a two to
ten-fold rise in food-related illnesses compared with 1994. A Swedish
study throws new light and raise important questions on the safety of
genetic engineered food. Dr. Mae-Wan Ho reports.

Food related illnesses are on the increase. At the end of 2000, more
than 250 foodborne diseases were described, but in the vast majority
of cases, the causal agent is unknown. Diarrhoea and vomiting are the
most common symptoms, with serious after-effects that include blood
poisoning, abortion, infections, blood in the urine, and death.
Chronic disorders of the heart and nervous system can also result, as
well as arthritis, renal disease, and disease of the digestive system

According to a report published at the end of 1999 [3], foodborne
diseases cause approximately 76 million illnesses, 325 000
hospitalisations and 5 000 deaths in the United States each year.
Known foodborne pathogens account for 14 million of the illnesses, 60
000 hospitalisations and 1 800 deaths. In other words, unknown agents
account for approximately 81% of food borne illnesses and
hospitalisations and 64% of deaths. Three pathogens, Salmonella,
Listeria and Toxoplasma kill 1500 each year, more than 75% of those
killed by known pathogens, while Campylobacter, Salmonella and
Shigella top the list in known causes of foodborne illnesses.

To see foodborne illnesses in perspective, total illnesses from known
pathogens are estimated at 38.6 million, and that includes 5.2 million
(13%) due to bacteria, 2.5 million (7%) due to parasites and 30.9
million (80%) due to viruses. The breakdown for foodborne illnesses in
terms of known etiological agents is similar, with the highest
proportion due to viruses.

The figures on foodborne illnesses are more than double those produced
in 1994 [4], which were between 6.5 to 33 million illnesses per year.
In terms of incidence, the increase is from 25 to 130 cases per 1 000
inhabitants in 1994 to 278 per 1 000 in 1999. Is the huge increase
over the past five years real? Or is it simply a case of improved
surveillance and reporting.

For comparison, a Swedish study was undertaken in the Municipality of
Uppsala of 186 000 inhabitants, based on enhanced surveillance and
retrospective interviews in 1998-1999 [5]. A total of 268 incidents
were recorded, and 515 cases documented. This gives an incidence of 28
illnesses per thousand, which falls within the low end of the US
estimate in1994. But that means the incidence of foodborne diseases in
the US in 1999 is nearly ten times that of Sweden, as well as up to
ten times higher than in 1994.

There are other aspects in the Swedish study comparable to the US.
Thus, in 79% of the cases, the etiological agent was unknown, a
proportion similar to the 81% reported in the US.

The breakdown in terms of known etiological agents, however, appears
quite different. In Sweden, bacteria were found to cause 10% of the
incidents and 25% of the documented cases, compared with 13% of cases
in the US. Viruses, on the other hand, caused only 9% of both the
incidents and documented cases in Sweden compared with 80% of cases in
the US. As there is no reason to suppose that the countries differ in
their ability to detect viruses, this discrepancy may well be

The Swedish study suggests that the incidence of foodborne diseases in
Sweden is similar to that of the United States in 1994, which is not
surprising as both countries are presumably comparable in their food
hygiene. But since then, the incidence in the United States has
undergone an increase of between two to ten-fold. Such a large
increase surely deserves to be thoroughly investigated.

Notably, genetically engineered food has increased enormously in the
US since 1994, with proponents insisting there is no evidence that it
has caused any harm. Health authorities should be on the lookout for
new viruses and bacteria that could evolve by the horizontal transfer
and recombination of viral and bacterial genes in genetically
engineered crops.

"Foodborne infections", CDC Press Release December 2000.
Lindsay JA. Chronic sequelae of foodborne diseases. Emerging
Infectious Diseases 1998, 3
Mead PS, Slutsker L, Dietz V, McCaig LF, Bresee JS, Shapiro C. Griffin
PM and Tauxe RV. Food-related illness and death in the United States.
Emerging Infectious Diseases 1999, 5, 607-25.
Foodborne Pathogens: risk and consequences. Ames (IA): Council of
Agricultural Science and Technology, 1994.
Lindqvist R, Andersson Y, Linkback J, Wegscheider M, Eriksson Y,
Tidestrom L, Lagerqvist-Widh A, Hedlund K-O, Lofdahl S, Svensson L and
Norinder A. A one-year study of foodborne illnesses in the
municipality of Uppsala, Sweden. Emerging Infectious Diseases 2001, 7

This article can be found on the I-SIS website at The Institute of Science
in Society,, PO Box 32097, London NW1 OXR Tel:
44 -020-7380 0908.

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