Ancient Greek

File:Biological Risk.png

World Health Organization (WHO)

Biosecurity A set of preventive measures designed to reduce the risk of intentional removal (theft) of a valuable biological material. These preventative measures are a combination of systems and practices usually put into place at a legitimate bioscience laboratory that could be sources of pathogens and toxins for malicious use. Although security is usually thought of in terms of "Guards, Gates, and Guns", biosecurity encompasses much more than that and requires the cooperation of scientists, technicians, policy makers, security engineers, and law enforcement officials.

Challenges in Biosecurity

The destruction of the World Trade Center in Manhattan on September 11, 2001 by terrorists, and subsequent wave of anthrax attacks on U.S. media and government outlets (both real and hoax), led to increased attention on the risk of bioterror attacks in the United States. Proposals for serious structural reforms, national and/or regional border controls, and a single co-ordinated system of biohazard response abounded.

The proliferation of high biosafety level laboratories around the world has many experts worried about availability of targets for those that might interested in stealing dangerous pathogens.

Emerging and Re-emerging disease is also a serious biosecurity concern. The recent growth in containment laboratories is often in response to emerging diseases, many new containment lab's main focus is to find ways to control these diseases. By strengthening national disease surveillance, prevention, control and response systems, these labs are raising international public health to new heights.

Biosecurity Incidents

• Professor Thomas Butler, United States, 2003

• 30 vials of Yesinia pestis missing from lab (never recovered); Butler served 19 months in jail

Strategies

Biosecurity sign for use on a farm or agricultural area experiencing swine fever (Dutch example).

Currently in North America, three complementary strategies exist:

• biodefense measures assuming the most threats are local and short-lived.
• biosafety measures heightening the scrutiny on people or goods at borders, and making pessimistic assumptions as per precautionary principle.
• health security measures ensuring early warning and universal insurance by guaranteeing that the most vulnerable populations are regularly monitored.

UNU/IAS Research into Biosecurity & Biosafety emphasizes "long-term consequences of the development and use of biotechnology" and need for "an honest broker to create avenues and forums to unlock the impasses."

Conferences and related events

Biosecuritycodes.org - A detailed list of past and future Biosecurity events dating from 1928. Brought to you by the International Futures Program of the OECD. The site is available in English and French with a limited Japanese version.

MOP3 (Third Meeting of the Parties to the Cartagena Protocol on Biosafety) 13 - 17 March / Curitiba - Brazil

Agriculture

The biosecurity concerns facing industrial agriculture can be illustrated by:

• the threat to poultry and humans from H5N1; possibly caused by use of animal vaccines
• the threat to cattle and humans from bovine spongiform encephalopathy (BSE); possibly caused by the unnatural feeding of cattle to cattle to minimize costs
• the threat of genetic pollution through contamination and horizontal gene transfer of novel, unstable genetic material from genetically modified organisms (GMOs)
• and the threat to industry profits from diseases like foot-and-mouth disease and citrus canker which increasing globalization makes harder to contain.

Bovine spongiform encephalopathy

Main article: Bovine spongiform encephalopathy

Bovine spongiform encephalopathy (BSE) is a fatal, neurodegenerative disease of cattle, which infects by a mechanism that surprised biologists upon its discovery in the late 20th century. In the UK, the country worst affected, 179,000 cattle were infected and 4.4 million killed as a precaution.

The disease can be transmitted to human beings who eat the brain or spinal cord from infected carcasses. In humans, it is known as new variant Creutzfeldt-Jakob disease (vCJD or nvCJD), and by June 2007, it had killed 165 people in Britain, and six elsewhere with the number expected to rise because of the disease's long incubation period. Between 460,000 and 482,000 BSE-infected animals had entered the human food chain before controls on high-risk offal were introduced in 1989.

A British inquiry into BSE concluded that the epidemic was caused by feeding cattle, who are normally herbivores, the remains of other cattle in the form of meat and bone meal (MBM), which caused the infectious agent to spread. The origin of the disease itself remains unknown. The current scientific view is that infectious proteins called prions developed through spontaneous mutation, probably in the 1970s, and there is a possibility that the use of organophosphorus pesticides increased the susceptibility of cattle to the disease. The infectious agent is distinctive for the high temperatures it is able to survive; this contributed to the spread of the disease in Britain, which had reduced the temperatures used during its rendering process. Another contributory factor was the feeding of infected protein supplements to very young calves instead of milk from their mothers.

Foot-and-mouth disease

Main article: Foot and mouth disease

Foot-and-mouth disease is a highly contagious and sometimes fatal viral disease of cattle and pigs. It can also infect deer, goats, sheep, and other bovids with cloven hooves, as well as elephants, rats, and hedgehogs. Humans are affected only very rarely.

FMD occurs throughout much of the world, and while some countries have been free of FMD for some time, its wide host range and rapid spread represent cause for international concern. In 1996, endemic areas included Asia, Africa, and parts of South America. North America, Australia, New Zealand and Japan have been free of FMD for many years. Most European countries have been recognized as free, and countries belonging to the European Union have stopped FMD vaccination.

Infection with foot-and-mouth disease tends to occur locally, that is, the virus is passed on to susceptible animals through direct contact with infected animals or with contaminated pens or vehicles used to transport livestock. The clothes and skin of animal handlers such as farmers, standing water, and uncooked food scraps and feed supplements containing infected animal products can harbor the virus as well. Cows can also catch FMD from the semen of infected bulls. Control measures include quarantine and destruction of infected livestock, and export bans for meat and other animal products to countries not infected with the disease.

Because FMD rarely infects humans but spreads rapidly among animals, it is a much greater threat to the agriculture industry than to human health. Farmers around the world can lose huge amounts of money during a foot-and-mouth epidemic, when large numbers of animals are destroyed and revenues from milk and meat production go down.

One of the difficulties in vaccinating against FMD is the huge variation between and even within serotypes. There is no cross-protection between serotypes (meaning that a vaccine for one serotype won't protect against any others) and in addition, two strains within a given serotype may have nucleotide sequences that differ by as much as 30% for a given gene. This means that FMD vaccines must be highly specific to the strain involved. Vaccination only provides temporary immunity that lasts from months to years.

Citrus canker

Main article: Citrus canker

Citrus canker is a disease affecting citrus species that is caused by the bacterium Xanthomonas axonopodis. Infection causes lesions on the leaves, stems, and fruit of citrus trees, including lime, oranges, and grapefruit. While not harmful to humans, canker significantly affects the vitality of citrus trees, causing leaves and fruit to drop prematurely; a fruit infected with canker is safe to eat but too unsightly to be sold.

The disease, which is believed to have originated in South East Asia, is extremely persistent when it becomes established in an area, making it necessary for all citrus orchards to be destroyed for successful eradication of the disease. Australia, Brazil and the United States are currently suffering from canker outbreaks.

The disease can be detected in orchards and on fruit by the appearance of lesions. Early detection is critical in quarantine situations. Bacteria are tested for pathogenicity by inoculating multiple citrus species with the bacterium. Simultaneously, other diagnostic tests (antibody detection, fatty-acid profiling, and genetic procedures using PCR) are conducted to identify the particular canker strain.

Citrus canker outbreaks are prevented and managed in a number of ways. In countries that do not have canker, the disease is prevented from entering the country by quarantine measures. In countries with new outbreaks, eradication programs that are started soon after the disease has been discovered have been successful; such programs rely on destruction of affected orchards. When eradication has been unsuccessful and the disease has become established, management options include replacing susceptible citrus cultivars with resistant cultivars, applying preventive sprays of copper-based bactericides, and destroying infected trees and all surrounding trees within an appropriate radius.

The citrus industry is the largest fresh-fruit exporting industry in Australia. Australia has had three outbreaks of citrus canker; two were successfully eradicated and one is ongoing. The disease was found twice during the 1900s in the Northern Territory and was eradicated each time. During the first outbreak in 1912, every citrus tree north of latitude 19° South was destroyed, taking 11 years to eradicate the disease. In 2004, Asiatic citrus canker was detected in an orchard in Emerald, Queensland, and was thought to have occurred from the illegal import of infected citrus plants. The state and federal governments have ordered that all commercial orchards, all non-commercial citrus tress, and all native lime trees (C. glauca) in the vicinity of Emerald be destroyed rather than trying to isolate infected trees.

Community impact assessment protocols

Differing concepts of biosecurity are evolving in many professions. So far the field has focused on attempts to establish uniform standards of risk referencing - see the biodiversity debate and health security. Nevertheless, many professional groups believe that their internal professional ethics and professional standards are sufficient to contain all relevant risks (which may be medical, agricultural and so on).

This fact emphasises the difficulty in agreeing common standards - definitions and requirements depend on, among other things, national, ecological, military, diplomatic and professional concerns. Consensus holds that biosecurity is a government responsibility, but beyond that, mandates of various government agencies include:

the development of guidelines on equitable and fair access and benefit-sharing of genetic resources, the ethical implications of biotechnology, international governance of biotechnology and biosafety, including rule making under the World Trade Organization and other regimes

In 2006, the International Futures Program of the Organization for Economic Co-operation and Development (OECD) launched the biosecuritycodes.org website. This site, available in English, French and a limited Japanese version, is dedicated to providing an active resource of global information on oversight mechanisms - particularly codes-of-conduct for the biosciences research community – to help advance these efforts and promote responsible oversight of the biosciences. The site contains key information, categorized geographically, on governmental, institutional, academic, and private sector biosecurity actors along with worldwide biosecurity legislation, events, terminology, and background materials.

A sampling of current (2002) national and professional mandates include commitments of

• NZ agriculture and forestry "to protect New Zealand's unique biodiversity and facilitate exports by managing risks to plant and animal health and animal welfare" as one of several agencies in the Biocouncil "managing exotic pests (or recent incursions)". Critics, including the NZ Greens, argue that these measures are insufficient to protect even against normal crop risks.

• USDA and pork producers to protect food "animal health" via "cleansing and disinfecting", "personal protective equipment", "carcass disposal", "nutrient management" and monitoring of "reportable diseases". Medical emergency response measures, especially in the military, emphasize the same concerns - but with respect to humans.

• US scientific societies to redefine biosecurity largely in terms of "countering terrorism", and not in terms of addressing unintentional man-made threats.

Clearly, no single set of guarantees can be said to represent biosecurity - just as no such set of guarantees clearly characterizes national security or any other form of security.

Historically, as with other public safety, fairness, and closure concerns, a nation-state attempted to assure biosecurity by tax, trade, tariff and active biodefense measures. More recently there has been a trend towards more sustainable measures such as safe trade rules for biosafety, an example of which is the Biosafety Protocol.

These are claimed to minimize the exposure of people and natural ecologies to alien organisms via trade or warfare.

See also

• Bioterrorism
• Biorisk
  • Game Theory
    • Behavioral ecology
• Invasive species
• Food safety
• United States Army Medical Research Institute of Infectious Diseases (USAMRIID)
• National Biodefense Analysis and Countermeasures Center (NBACC)