Foot-and-mouth disease epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

FMD occurs throughout much of the world, and whilst some countries have been free of FMD for some time, its wide host range and rapid spread represent cause for international concern.

Epidemiology and Demographics

FMD occurs throughout much of the world, and whilst some countries have been free of FMD for some time, its wide host range and rapid spread represent cause for international concern. After World War II, the disease was widely distributed throughout the world. In 1996, endemic areas included Asia, Africa, and parts of South America; as of August 2007, Chile is disease free,[1] and Uruguay and Argentina have not had an outbreak since April 1994.[citation needed] North America, Australia and Japanhave been free of FMD for many years. New Zealand has never had a case of foot and mouth disease.[2] Most European countries have been recognized as disease free, and countries belonging to the European Union have stopped FMD vaccination.

However, in 2001, a serious outbreak of FMD in Britain resulted in the slaughter of many animals, the postponing of the general election for a month, and the cancellation of many sporting events and leisure activities such as the Isle of Man TT. Due to strict government policies on sale of livestock, disinfection of all persons leaving and entering farms and the cancellation of large events likely to be attended by farmers, a potentially economically disastrous epizootic was avoided in the Republic of Ireland[citation needed], with just one case recorded in Proleek, Co. Louth. In August 2007, FMD was found at two farms in Surrey, England. All livestock were culled and a quarantine erected over the area. There have since been two other suspected outbreaks, although these seem now not to be related to FMD.

Outbreaks

United Kingdom, 1967

United Kingdom, 2001

The outbreak of foot-and-mouth disease in the United Kingdom in the spring and summer of 2001 was caused by the "Type O pan Asia" strain of the disease[3]. This episode saw more than 2,000 cases of the disease in farms throughout the British countryside. Around seven million sheep and cattle were killed in an eventually successful attempt to halt the disease. The county of Cumbria was the worst affected area of the country, with 843 cases. By the time the disease was halted by October 2001, the crisis was estimated to have cost Britain £8bn ($16bn) in costs to the agricultural and agricultural support industries and to the outdoor industry. The major reason this outbreak was so serious was the time between infection being present at the first outbreak loci and the time that countermeasures were put into operation against the disease such as transport bans and detergent washing of both vehicles and personnel entering livestock areas.

United Kingdom, 2007

An outbreak of foot-and-mouth disease in the United Kingdom was confirmed by the Department for Environment, Food and Rural Affairs, on 3 August2007, on farmland located in Normandy, Surrey.[4][5] All livestock in the vicinity were culled on 4 August. A nationwide ban on the movement of cattle and pigs was imposed, with a 3 km (1.9 mile) protection zone placed around the outbreak sites and the nearby virus research and vaccine production establishments, together with a 10 km (6.2 mile) increased surveillance zone.[6]

On 4 August the strain of the virus was identified as an "01 BFS67-like" virus, one linked to vaccines and not normally found in animals, and isolated in the1967 outbreak.[7] The same strain was used at the nearby Institute for Animal Health andMerial Animal Health Ltd at Pirbright, 2½ miles (4 km) away which is an American/French owned research facility, and was identified as a possible source of infection.[8]

On 12 September a new outbreak of the disease was confirmed in Egham, Surrey, 19km (12 miles) away from the original outbreak[9], with a second case being confirmed on a nearby farm on 14 September.[10]

References

  1. Template:Cite paper
  2. http://www.biosecurity.govt.nz/pests-diseases/animals/foot-n-mouth/freedom-statement.htm, official government press release, New Zealand's Freedom From Foot And Mouth Disease, Biosecurity New Zealand, accessdate = 2007-08-06
  3. http://copus.org.uk/page.asp?tip=1&id=1252%7Ctitle=What is foot and mouth disease?
  4. "Foot and Mouth Disease confirmed in cattle, in Surrey". DEFRA. 2007-08-03. Retrieved 2007-08-03. Check date values in: |date= (help)
  5. "Further farms tested for disease". BBC News. 2007-08-04. Retrieved 2007-08-04. Check date values in: |date= (help)
  6. Miles Goslett (2007-08-03). "Foot and mouth: new possible cases reported". The Daily Telegraph. Retrieved 2007-08-04. Check date values in: |date= (help)
  7. "Results of Foot and Mouth Disease Strain in Surrey, extension of zones". DEFRA. 2007-08-04. Retrieved 2007-08-04. Check date values in: |date= (help)
  8. "Foot-and-mouth strain identified". BBC News. 2007-08-04. Retrieved 2007-08-04. Check date values in: |date= (help)
  9. "'Pirbright link' to farm outbreak". BBC News. Dated 12 September 2007
  10. "Outbreak at second farm confirmed" BBC News

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