Food poisoning- How well the world is managing the food-borne diseases?

Food-borne pathogens, innumerable in number, cause a catalogue of diseases, many of them with potential to cause death. Why is that we are not able to prevent such food poisoning episodes totally inspite of enormous scientific knowledge and large resources at our disposal? The question is a difficult one to answer satisfactorily though many reasons can be cited. Think of the gigantic size of this sector spanning across more than 150 countries in 5 major continents. According to some estimates food processing industry produces more than 50, 000 products at any given time and at least 10% of these are replaced by new products using new technologies. In such a scenario where millions of hands are involved in handling the food from farm to the fork and an extended distribution spanning over 15000 Km where do we look for the culprits whenever a food poisoning episode breaks out? It is like picking a pin from a haystack! Still world has done reasonably well so far .

Globally the out put of processed foods is variably placed at 1.6 to 4.8 trillion  dollars from a raw material base worth 48 trillion dollars. How far these figures are reliable we do not know but by any standard the dimension of this sector is gigantic. If this is so how well we have done in controlling this scourge with the facilities, expertise and experience at our disposal?  World wide 2 billion cases of food borne disease incidences are reported every year though some doubts remain regarding such a high figure. Except in developed countries like the US, Europe, Australia etc the documentation of food-borne diseases incidences in most other countries, is a sham lacking credibility. USA reports that there were 47.8 million cases of food related incidences, working to about 1600 cases per 1 lakh population which highlights the seriousness of food poisoning in that country. Out of this 9.4 million cases were pathogen related, caused by 31 known bugs. Even after hospitalization and best medical care Americans are known to get, there were more than 3000 deaths which could not be prevented. In the UK there were 5.5 million food poisoning cases, almost 1 in 16 of the population affected by infection carried by the foods they consumed. Compare this with what is happening in Asia where there were 7 lakh deaths caused by spoiled foods, it is said!.

What are these pathogens about which world is so scared of? They can be bacteria, viruses, fungi etc which cause symptoms to appear in 12-72 hours. These symptoms include vomiting, fever, aches, diarrhea and others. How can these vectors gain access to foods? Through negligence in handling, processing, storage and due to bad sanitary environment. Campylobacter jejuni, Salmonella spp, Escherichia coli 0157:H7 are the major causative organisms for a major part of the food poisoning cases reported in many countries. There are many other bugs like B.cereus, Listeria spp, Shigella spp, Streptococci spp, Staphylococcus spp and a few others pitching in to cause other food poisoning episodes. Bacteria like Clostridium botulinum, Clostridium perfringens and Bacillus cereus secrete enterotoxins which are poisonous while Aflatoxins and Ochratoxins are secretary products from fungi like Aspergillus parasiticus and Aspergillus flavus. If we know so much about these predators in our foods what holds us back to improve the process technologies to ensure their destruction totally? Unfortunately many food borne diseases are caused during post-processing phase of food handling which is outside the control of the manufacturers. 

One would assume that the food industry will be keen to deploy most reliable, fastest and lowest cost diagnostic tools to detect and eliminate pathogens from their raw materials, intermediate materials and final packed products.  Researchers from the US have claimed to have developed a new diagnostic tool for detecting the presence of bacteria, viruses and other pathogens precisely and quickly. The test is based on the accepted biological theory that each and every microorganism has a specific and unique biomarker in their cells that could be DNA or RNA and by targeting this marker through a specially designed biochip, presence of these vectors can be detected fast. Though the present stage of development is confined to single biochip for each individual pathogen, there appears to be technical feasibility of developing multiplex chips that has the ability to detect several pathogens at one go.

Probably the enthusiasm of the scientists was spurred by the sufferings of millions of people affected by food poisoning and naturally they assumed that the food industry would be the perfect market for their new innovation. The quick time test they developed is claimed to identify, several bugs including the dreaded E. coli 0157, which has caused a number of deadly outbreaks in the United States and other parts of the world. Their test also is supposed to identify other pathogens responsible for brucellosis also which results from eating undercooked meat or unpasteurized dairy products. Though their test was inexpensive and fairly fast, the food industry does not seem to be too impressed as the latter wanted even faster tests that could give results in a jiffy! 

Probably food industry does not want to save on the cost on the testing kit considering that the consequences of "not catching" the infection in time could be more disastrous in economic terms. A bench mark time of 2 hours was demanded to conclude the test which the above innovation was not able to achieve. That shifted the focus of the researchers to target medical industry where hospital sanitation is crucial to avoid infection of patients through ill maintained environment, furnishings, medical tools, foods served, human interface and many other sources. The test can also recognize the virus that causes Dengue fever, potentially valuable for surveillance activities both here and abroad, and human papillomavirus (HPV), which is linked to cervical and oral cancers. That is how a test targeted at food industry became a darling of the medical industry in no time. Thus food industry's loss became medical industry's gain! 

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com

IS THE US BECOMING THE CAPITAL OF FOOD POISONING?-A SCARY SCENARIO!

Why is that almost all food related poisoning incidences are reported from the developed world? The much maligned developing countries do not "boast" of even a single major out break of food poisoning though there might have been occasional reports of minor nature. why is that tourists from Western world are afraid of visiting many poor countries in the world where majority of the population is concentrated? Obviously because they are afraid of polluted atmosphere, unsafe water and food, unhygienic habitats and unreliable medical facilities. But look at the mortality rate due to food poisoning! Very few deaths are attributed to food poisoning, most fatalities attributed to diseases, infectious as well other types. Is there any convincing scientific reason for such a paradox? 

There is always the temptation to correlate affluence with food poisoning but is there really such a relationship? No one is sure though circumstantial evidence do point out such a nexus. Most of the pathogenic bacteria involved in food poisoning are more frequently reported in animal foods like meat and egg and this naturally raises the question whether food poisoning has any connection with increased meat production and consumption. Since there are no cultural constraint in mixing meat products and non-meat products as most consumers in the West are meat eaters, scrupulous segregation of these products may not happen in many cases and such a situation can cause cross contamination from these sources. Similarly irrigation water used in cultivation can become contaminated in areas where slaughter houses and meat handling facilities are located and migration of bacteria from water into fruits and vegetables is a distinct possibility.  This can explain frequent reporting of contamination of fresh produce such as Spinach, Tomato, Peanuts, Cucumber etc in the US.

One must recall the recent out break of virulent E.coli related food poisoning which killed several persons besides causing damage to the health of hundreds of people in Europe, boasting of high standards of living and modern living facilities and still it is not clear what really caused such an incidence. Though the blame game was going on for some time regarding the culprit for the incidence, finally culminating in putting the blame on an Egyptian consignment of Fenugreek imported for sprouting, the moot question is why it did not happen in the country of origin and why the "monster killer" waited till it landed in Europe to bare its fangs? This is scary situation where no one seems to know which pathogen is going to strike when and where! If a small out break like this could claim several lives in Europe with high standards of living, what if the same kind of poisoning happens in a thickly populated country like India or China? 

Most recent food poisoning was reported from the US where the innocuous Cantaloupe became the carrier for Listeria, another little monster with deadly credentials, killing 13 people and affecting many people who were hospitalized. Imagine the fate of many people who had the misfortune to eat this fruit when it is known that the food poisoning manifestations from Listeria can appear several weeks after the consumption of the contaminated fruit. Though several theories float around regarding the reason for this fruit to get contaminated, no one seems to have a sure answer. It is admitted by Microbiologists familiar with the episode that finding out the reason may not be easy. Probably the contamination must have occurred due to improper washing process allowing the bacteria to migrate into the inside of the fruit. Fortunately due to recall of about 300,000 cases of the suspected fruit the damage was some what contained. The stark question that confront countries like the US is whether prevention of such episodes can be more effective than spending time and resources to chase the problem after such episodes are allowed to occur. 

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Food poisoning is reported to affect an estimated 48 million people in the U.S. each year, leading to 128,000 hospitalizations and 3,000 deaths and such food-borne illnesses cost the nation's economy about $152 billion annually in health-care expenses and lost productivity. It is time to reinvent the meaning of food safety and new rules are necessary to ensure food does not become contaminated due to callous handling to limit illnesses. The last word on Cantaloupe tainting has not been heard because there may be thousands of households in the country holding the contaminated fruit in their refrigerators waiting to be consumed without the consumers unaware of the consequences awaiting them if and when they eat them. Mandatory rules, not guidelines, are needed to force the industry to adopt correct practices to prevent illnesses arising out of contamination of foods with a plethora of more and more virulent bacteria.

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com

PUFFED RICE 'POISONING'-DOES ANY ONE CARE AT DELHI?

In a tragic incidence of food poisoning that occurred in a remote village in Karnataka on November 16, 2009, seven persons were reported to have been killed while four others were hospitalized. The bare report by a news agency mentioned that the poor villagers ate puffed rice served to them where after one women died immediately while four lost their lives while being taken to hospital. Another two died in the hospital subsequently. Probably these deaths occurred within a span of few hours. The episode happened in Konkal village of Shahapur Taluk in Gulbarga district which affected several people and some one seems to have decided it was due to consumption of the traditional puffed rice based preparation "mandaal vaggarane". The knee-jerk reaction of the authorities was to announce ex-gratia payment to the victims, forget the entire episode and wait for the next tragedy to happen!

Several issues regarding this unfortunate incidence are baffling. Why only a total of 11 people were affected out of which 7 died, varying in age between 10 and 60 years, all from one family? Did the local hospital conduct any Post Mortem on the bodies? If food poisoning is indeed the cause, what is the type of poison that caused death so fast? Any thing has been done to trace the source of 'poison'? A dry material like puffed rice with such a low water activity cannot be a good medium for fatal microbial infection and even if so, such infections take time to develop "lethality" in human beings.

A thorough investigation involving police and toxicology experts can only bring out the real facts in this case as puffed rice with low moisture content is one of the safest foods available and as a traditional food material it has a long shelf life. True the process of making puffed rice is confined mostly to cottage scale sector and involved heating of conditioned paddy in sand medium in small batches. Though modernization efforts were made some years ago, very few artisans are willing to change their traditional practices. Possible reasons for the fatalities could be intentional homicide, voluntary suicide, accidental contamination of paddy used with poisonous agri-chemicals, storage of puffed rice along with poisonous substances or unintentional addition of poisonous ingredients during preparation of the mandaal vaggarne which was consumed by the victims.

The casual way the news was reported shows how indifferent our safety monitoring agencies at Delhi and the states are to the sufferings of citizens. Contrast this with a similar episode reported from Minnesota in USA in April last year when puffed rice and puffed wheat made by a local manufacturer caused food poisoning to just 23 people in 14 different states of the country which was immediately traced to Salmonella agona by DNA finger printing! This infection causes nausea, vomiting, fever, diarrhea, stomach cramp and can be life threatening for people with poor health and weakened immunity system. The response from the health authorities was spontaneous in pinpointing the cause, identifying the causative agent and recalling millions of packs of these products from the market as a precaution. In India we have an "Authority" at Delhi, supposed to be "looking after" the food safety concerns in the country which must lead by action in taking up such cases for detailed investigations to avoid future recurrence of such episodes, in stead of "sermonizing from the pulpit". Some hope!

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com