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Looking Behind the Figures

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The End of an Antibiotic Era
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Abstract

The Netherlands has had a solid reputation for their moderate use of antibiotics in human medicine, for many years. Doctors there usually think twice before prescribing antimicrobial drugs. The lower the consumption of antibiotics in a country, the less you will encounter antibiotic resistance. So the Dutch perform well in this field, better than almost any country in the world. Consequently, antibiotic resistance is a relatively small problem in the Netherlands. But the restraint in prescribing antibiotics by most Dutch doctors was until quite recently, not shared by veterinarians. On the contrary, the usage of antibiotics in veterinary medicine was sky-high during a long period of time. Not until the last decade a radical change took place, in a typical Dutch way. Not forced by law, but on the basis of mutual agreements between farmers organizations and the authorities, a sharp decrease in the usage of veterinary antibiotics was realized. Although Dutch farmers still use quite a lot of antibiotics compared to many other European countries, the difference with earlier and no-so-distant days is striking.

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Notes

  1. 1.

    Of course, the lowest use of antibiotics is not necessarily the best use. Underdosing is also possible.

  2. 2.

    See also Chap. 5, A thin layer of faeces on everything you touch.

  3. 3.

    A herd is a group of animals that is admitted to a livestock farm at a certain time and looked after as a group.

  4. 4.

    On 1 January 2014 Mevius was succeeded by Jaap Wagenaar, Professor of Clinical Infectious Diseases at Utrecht University and veterinary surgeon.

  5. 5.

    In 2010, the use of antibiotics in the veterinary sector in Belgium decreased to 299.3 tonnes, compared with 304 tonnes in 2009: The use of certain antibiotics important for humans has vastly increased: cephalosporin by 8.8%, quinolone by 2.8% and macrolide by 16.3%. The doses of these antibiotics are also considerably lower (BelVet-SAC 2010).

  6. 6.

    The amounts of veterinary antimicrobial medicines sold in different countries are linked to the animal demographics of each country, among other factors. In this report, the annual sales figures in each country were divided by the total estimated weight of livestock at the time of treatment and of slaughtered animals for the corresponding year, taking into account the import and export of animals to other member states for fattening or slaughter. The population correction unit (PCU) is the term used for the estimated weight. The PCU is purely a surrogate for the animal population at risk, in order to normalise sales by animal population in individual countries: 1 PCU equals 1 kg.

  7. 7.

    A commission set up in 1968 by the British Ministers for agriculture and health, presided over by Professor Swann, was given the task of investigating the use of antibiotics in livestock farming.

  8. 8.

    Many Dutch hospitals had to combat VRE outbreaks in 2012. See Chap. 5 A thin layer of faeces on everything you touch.

  9. 9.

    This section on the change in Danish policy is based on a study carried out by Berenschot (Beemer et al. 2010).

  10. 10.

    According to information supplied by veterinary microbiology expert Jaap Wagenaar at Utrecht University and his Danish colleague Henrik Wegener of the Danish Institute for Food and Veterinary Research in Søborg, the situation in the Nordic countries is exceptional. In other countries veterinary surgeons sell the medicines they prescribe themselves.

  11. 11.

    With or without the Danish model, the sales of antibiotics fell from 495 tonnes in 2009 to 176 tonnes in 2016, which is also a considerable decrease compared to the 150 tonnes sold in 2019 (SDa 2020a).

  12. 12.

    Specific isolation rules apply to pig farmers and their families until it is confirmed that they are not infected with MRSA.

  13. 13.

    The ‘Antibiotic Resistance in Livestock Farming’ task force, presided over by agriculture specialist and former Managing Director of Radboud University Medical Centre Jos Werner, was created in 2008 by Minister of Agriculture Gerda Verburg. Werner was at the time also sitting on the supervisory board of the pharma company Merck, which has a large veterinary medicine department.

  14. 14.

    A bacteriostatic antibiotic from the group of streptogramins, which is isolated from cultures of Streptomyces virginiae.

  15. 15.

    In a hatchery, eggs are artificially hatched using incubators. The female chicks are delivered to breeding farms by the hatcheries.

  16. 16.

    Most of the work of the European Food Safety Authority is done in response to requests from the European Commission, the European Parliament or EU member states, as the EFSA website states (EFSA 2020).

  17. 17.

    The Codex Alimentarius Commission (Codex) is an international forum of 188 member states and one memberorganisation (the European Union) coordinated by the FAO (the UN Food and Agriculture Organisation) and the WHO (World Health Organisation) (Codex Alimentarius 2020).

  18. 18.

    ‘Decolonisation’ is a way of eradicating or reducing considerably the asymptomatic carriage of MRSA. The procedures are carried out for at least 5 days. The nares, the nasopharynx, the skin (especially folds of the skin), the gastrointestinal tract and the perineum are the main sites of colonization by MRSA and, thus, for decolonization. After this, new cultures are taken to see if the treatment has been effective.

  19. 19.

    Data from an oral communication in 2012 of Professor Jan Kluijtmans to the author.

  20. 20.

    According to the Food and Agriculture Organization of the United Nations and the World Health Organization, probiotics are living microorganisms that benefit the host organism’s health if administered in sufficient quantities (FAO/WHO 2002).

  21. 21.

    If a bacterium is resistant to antibiotics of the carbapenem class, there are still two other medicines left that can be used: tigecycline and colistin.

  22. 22.

    If no approved medicine is available for a specific disease the veterinary surgeon must act according to a decision tree, which can lead to their using a medicine approved for humans on animals.

  23. 23.

    For more on this topic see Chap. 7 The end in sight.

  24. 24.

    Besides tigecycline (already mentioned in connection with ESBL-producing bacteria), the commission also includes in this category glycopeptides (e.g. vancomycin), daptomycin, oxazolidinone (linezolid) and mupirocin.

  25. 25.

    These included supermarket chains, abattoirs, farmers’ associations and animal feed suppliers.

References

  • Aarestrup, F. M., Jensen, V. F., Emborg, H. D., et al. (2010). Changes in the use of antimicrobials and the effects on productivity of swine farms in Denmark. American Journal of Veterinary Research, 71(7), 726–733. https://doi.org/10.2460/ajvr.71.7.726.

    Article  PubMed  Google Scholar 

  • Beemer, F., Van Velzen, G., Van den Berg, C., et al. (2010). Wat zijn de effecten van het ontkoppelen van voorschrijven en verhandelen van diergeneesmiddelen door de dierenarts? In Dutch. Accessed November 30, 2020, from https://edepot.wur.nl/133692

  • BelVet-SAC. (2010). Belgian Veterinary Surveillance of Antimicrobial Consumption National consumption report 2010. Accessed November 29, 2020, from https://bit.ly/3gwRdCw

  • BfR. (2016). Bundesinstitut für Risikobewertung. Antibiotikaresistenz: Carbapenemase-bildende Keime in Nutztierbeständen. Aktualisierte Mitteilung Nr. 036/2016 des BfR vom 23.12.2016. In German. Accessed December 9, 2020, from https://bit.ly/2LqG6zP

  • Bleker, H., & Schippers, E. I. (2012). Antibioticagebruik in de veehouderij. Letter to parliament. In Dutch. Accessed December 3, 2020, from https://bit.ly/3otkMbr

  • Boerderij. (2014). Bedrijf en woning diervoerfabrikant doorzocht. In Dutch. Accessed December 6, 2020, from https://bit.ly/2VMieZf

  • Bos, M. E. H., Taverne, F. J., Van Geijlswijk, I. M., et al. (2013). Consumption of antimicrobials in pigs, veal calves, and broilers in The Netherlands: quantitative results of nationwide collection of data in 2011. PLoS One, 8(10), e77525. https://doi.org/10.1371/journal.pone.0077525.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  • Codex Alimentarius Commission. (2020). International food standards. Accessed December 6, 2020, from https://bit.ly/33Ou5dE

  • Commissie Van Doorn. (2011). Al het vlees duurzaam De doorbraak naar een gezonde, veilige en gewaardeerde veehouderij in 2020. In Dutch. Accessed December 9, 2020, from https://edepot.wur.nl/176874

  • DANMAP. (2013). DANMAP 2012 - Use of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from food animals, food and humans in Denmark. Accessed November 30, 2020, from https://bit.ly/3qcgMgB

  • DANMAP. (2014). DANMAP 2013 - Use of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from food animals, food and humans in Denmark. Accessed November 30, 2020, from https://bit.ly/3oeLowl

  • DANMAP. (2015). DANMAP 2014 - use of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from food animals, food and humans in Denmark. Accessed November 30, 2020, from https://bit.ly/36n7k28

  • DANMAP. (2017). DANMAP 2016 - use of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from food animals, food and humans in Denmark. Accessed December 7, 2020, from https://bit.ly/39Ozp4D

  • DANMAP. (2018). DANMAP 2017 – Use of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from food animals, food and humans in Denmark. Accessed December 7, 2020, from https://bit.ly/33PgLWg

  • DANMAP. (2019). DANMAP 2019 - Use of antimicrobial agents and occurrence of antimicrobial resistance in bacteria from food animals, food and humans in Denmark. Accessed April 5, 2021, from https://www.danmap.org/reports/2019

  • De Telegraaf. (2012). 1000 kilo illegale antibiotica in Brabant. In Dutch. Accessed December 3, 2020, from https://bit.ly/3npeOqB

  • ECDC (European Centre for Disease Prevention and Control). (2018). Surveillance of antimicrobial resistance in Europe – Annual report of the European Antimicrobial Resistance Surveillance Network (EARS-Net). Accessed December 8, 2020, from https://bit.ly/2L69ICM

  • ECDC (European Centre for Disease Prevention and Control). (2020). Data from the ECDC Surveillance Atlas – Antimicrobial Resistance. Accessed December 8, 2020, from https://bit.ly/35lcsTm

  • EFSA (European Food Security Authority). (2020). Accessed December 6, 2020, from https://www.efsa.europa.eu/

  • EMA (European Medicines Agency). (2011). Trends in the sales of veterinary antimicrobial agents in nine European countries (2005-2009). Accessed November 29, 2020, from https://bit.ly/2VgYBrS

  • EMA (European Medicines Agency). (2012). Sales of veterinary antimicrobial agents in 19 EU/EEA countries in 2010. Accessed November 29, 2020, from https://bit.ly/3mfdOFP

  • EMA (European Medicines Agency). (2013). Use of colistin products in animals within the European Union: development of resistance and possible impact on human and animal health. Accessed December 9, 2020, from https://bit.ly/3n3Pl6S

  • EMA (European Medicines Agency). (2016). Sales of veterinary antimicrobial agents in 29 European countries in 2014. Accessed November 30, 2020, from https://bit.ly/2Jue05G

  • EMA (European Medicines Agency). (2017). European Surveillance of Veterinary Antimicrobial Consumption. Sales of veterinary antimicrobial agents in 30 European countries in 2015. Accessed November 29, 2020, from https://bit.ly/36jnqKg

  • EMA (European Medicines Agency). (2018). European Surveillance of Veterinary Antimicrobial Consumption. Sales of veterinary antimicrobial agents in 30 European countries in 2016. Accessed from https://bit.ly/3oaaJXY

  • EMA (European Medicines Agency). (2019). European Surveillance of Veterinary Antimicrobial Consumption. Sales of veterinary antimicrobial agents in 31 European countries in 2017. Accessed November 29, 2020, from https://bit.ly/2HT1fkG

  • EMA (European Medicines Agency). (2020). European Surveillance of Veterinary Antimicrobial Consumption. Sales of veterinary antimicrobial agents in 31 European countries in 2018. Accessed November 29, 2020, from https://bit.ly/2JnO6An

  • FAO/WHO. (2002). Guidelines for the evaluation of probiotics in food. Accessed December 8, 2020, from https://bit.ly/3s3L32a

  • FDA - US Food and Drug Administration. (2012). Cephalosporin order of prohibition questions and answers. Accessed from https://bit.ly/2JDQqDK

  • Feednavigator.com. (2014). Dutch feed maker could face sanction over banned antibiotic in veal supply chain. Accessed December 6, 2020, from https://bit.ly/3lQhHQx

  • Friesema, I. H., De Jong, A. E., Fitz James, I. A., et al. (2012). . Outbreak of Salmonella Thompson in the Netherlands since July 2012. Eurosurveillance, 17(43). Accessed from https://bit.ly/3hTOYtI

  • Gastmeier, P. (2013). Nosokomiale Infektionen in Deutschland und Häufigkeit von Infektionen durch multiresistente Erreger. Oral presentation (in German) at the Bad Honnef symposium 2013 on 25 and 26 March 2013 in Königswinter Germany. Accessed December 7, 2020, from https://bit.ly/2VRll1U

  • Gezondheidsraad. (2011). Health Council of the Netherlands. Antibiotica in de veeteelt en resistente bacteriën bij mensen. Summary in Dutch. Accessed December 8, 2020, from https://bit.ly/39TBkF6

  • Kluijtmans, J. (2011). Oral presentation on livestock associated MRSA. Bilthoven 18 Nov 2011. No link available.

    Google Scholar 

  • Kovács, E. (2011). Lessons from the Danish Ban on Antimicrobial Growth Promoters. Interfaith Centre on Corporate Responsibility. Accessed November 30, 2020, from https://bit.ly/3hUcDtW

  • Leverstein-van Hall, M. A., Dierikx, C. M., Cohen Stuart, J., et al. (2011). Dutch patients, retail chicken meat and poultry share the same ESBL genes, plasmids and strains. Clinical Microbiology and Infection, 17(6), 873–880. https://doi.org/10.1111/j.1469-0691.2011.03497.x.

    Article  CAS  PubMed  Google Scholar 

  • Levy, S. (2014). Reduced Antibiotic Use in Livestock: How Denmark Tackled Resistance. Environmental Health Perspectives, 122(6), A160–A165. https://doi.org/10.1289/ehp.122-A160.

    Article  PubMed  PubMed Central  Google Scholar 

  • Meyer, E., Schröder, C., Gastmeier, P., et al. (2014). The reduction of nosocomial MRSA infection in Germany. An analysis of data from the hospital infection surveillance system (KISS) between 2007 and 2012. Deutsches Ärzteblatt International, 111(19), 331–336. https://doi.org/10.3238/arztebl.2014.0331. Accessed from https://bit.ly/39dDltM.

    Article  PubMed  PubMed Central  Google Scholar 

  • NethMap/MARAN. (2016). Consumption of antimicrobial agents and antimicrobial resistance among medically important bacteria in the Netherlands/Monitoring of Antimicrobial Resistance and Antibiotic Usage in Animals in the Netherlands in 2015. Accessed December 7, 2020, from https://bit.ly/2VPpTWA

  • NethMap/MARAN. (2017). Consumption of antimicrobial agents and antimicrobial resistance among medically important bacteria in the Netherlands/Monitoring of Antimicrobial Resistance and Antibiotic Usage in Animals in the Netherlands in 2016. Accessed December 7, 2020, from https://bit.ly/3ous8v5

  • NethMap/MARAN. (2018). Consumption of antimicrobial agents and antimicrobial resistance among medically important bacteria in the Netherlands/ Monitoring of Antimicrobial Resistance and Antibiotic Usage in Animals in the Netherlands in 2017. Accessed December 7, 2020, from https://bit.ly/2JVXoEk

  • NethMap/MARAN. (2019). Consumption of antimicrobial agents and antimicrobial resistance among medically important bacteria in the Netherlands/Monitoring of Antimicrobial Resistance and Antibiotic Usage in Animals in the Netherlands in 2018. Accessed December 7, 2020, from https://bit.ly/37B3GRu

  • NethMap/MARAN. (2020). Consumption of antimicrobial agents and antimicrobial resistance among medically important bacteria in the Netherlands/Monitoring of Antimicrobial Resistance and Antibiotic Usage in Animals in the Netherlands in 2019. Accessed December 7, 2020, from https://bit.ly/3s4q7bf

  • NOS. (2011). Normen voor antibiotica voor dieren. In Dutch. Accessed December 1, 2020, from https://bit.ly/35lUSin

  • Obadia, T., Silhol, L., Opatowski, L., et al. (2015). Detailed contact data and the dissemination of Staphylococcus aureus in hospitals. PLoS Computational Biology, 11(3), e1004170. https://doi.org/10.1371/journal.pcbi.1004170.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  • Overdevest, I., Willemsen, I., Rijnsburger, M., et al. (2011). Extended-spectrum β-Lactamase Genes of Escherichia coli in Chicken Meat and Humans, the Netherlands. Emerging Infectious Diseases, 17(7), 1216–1222. https://doi.org/10.3201/eid1707.110209.

    Article  PubMed  PubMed Central  Google Scholar 

  • OvV - Onderzoeksraad voor Veiligheid -Dutch Safety Board. (2013). Salmonella in smoked salmon. English summary. Accessed December 6, 2020, from https://bit.ly/3gpBoh6 For the complete report, in Dutch, see https://bit.ly/3hTPQP0

  • RIVM. (2012). Nationale surveillance van MRSA en CPE t/m week 52 2011. In Dutch. Data on both 2010 and 2011. Accessed December 6, 2020, from https://bit.ly/2MIbVo9

  • RIVM. (2013). Nationale surveillance van MRSA en CPE t/m week 52 2012. In Dutch. Accessed December 6, 2020, from https://bit.ly/35nnMhS

  • RIVM. (2014). Nationale surveillance van MRSA en CPE t/m week 52 2013. In Dutch. Accessed December 7, 2020, from https://bit.ly/399I2om

  • RIVM. (2015). Nationale surveillance van MRSA en CPE t/m week 52 2014. In Dutch. Accessed December 7, 2020, from https://bit.ly/2JXGRzT

  • Schippers, E. I. (2014). Beantwoording Kamervragen over salmonella en gezondheidsrisico’s bij de firma Foppen. In Dutch. Accessed December 6, 2020, from https://bit.ly/2LfPGp9

  • SDa. (2012). Autoriteit Diergeneesmiddelen. Beschrijving van het antibioticumgebruik bij vleeskuikens, zeugen en biggen, vleesvarkens en vleeskalveren in 2011 en benchmarkindicatoren voor 2012. Rapportage van het expertpanel van de SDa, Autoriteit Diergeneesmiddelen. In Dutch. Accessed December 1, 2020, from https://bit.ly/3ocU5r0 See also: Bos et al. 2013.

  • SDa. (2013). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in livestock in the Netherlands in 2012. Accessed December 3, 2020, from https://bit.ly/2I6ZjFa

  • SDa. (2014). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2013. Trends and benchmarking of livestock farms and veterinarians. Accessed December 3, 2020, from https://bit.ly/3lEhbVy

  • SDa. (2015). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2014. Trends and benchmarking of livestock farms and veterinarians. Accessed December 3, 2020, from https://bit.ly/3qsik6v

  • SDa. (2016). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2015. Trends and benchmarking of livestock farms and veterinarians, and a revision of the benchmarking method. Accessed December 3, 2020, from https://bit.ly/39DsDyz

  • SDa. (2017). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2016. Trends and benchmarking of livestock farms and veterinarians. Accessed December 3, 2020, from https://bit.ly/3qqjkrG

  • SDa. (2018). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2017. Trends and benchmarking of livestock farms and veterinarians. Accessed December 3, 2020, from https://bit.ly/2JJJzZn

  • SDa. (2019). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2018. Trends and benchmarking of livestock farms and veterinarians. Accessed December 3, 2020, from https://bit.ly/2L55dYF

  • SDa. (2020a). The Netherlands Veterinary Medicines Institute. About SDa. Accessed December 1, 2020, from https://bit.ly/3bkkxLU

  • SDa. (2020b). The Netherlands Veterinary Medicines Institute. Usage of antibiotics in agricultural livestock in the Netherlands in 2019. Trends and benchmarking of livestock farms and veterinarians. Accessed December 1, 2020, from https://bit.ly/39wKWoU

  • Sikkema, A. (2011). Boeren zonder antibiotica. Wageningen World, 2(4), 10–15. In Dutch Accessed December 8, 2020, from https://edepot.wur.nl/218419

  • Sikkens, J. J., & van Agtmael, M. A. (2012). Verslag Europese antibioticadag 2011: Antibiotica op het humaanveterinaire grensvlak. In Dutch. Accessed December 6, 2020, from https://bit.ly/3bkT6Sd

  • Swann, M. M., Baxter, K. L., Field, H. I., et al. (1969). Report of the Joint Committee on the use of Antibiotics in Animal Husbandry and Veterinary Medicine. Accessed November 30, 2020, from https://bit.ly/3bkpdBs

  • The Irish Times. (2013). Swedish government withdraws hamburgers. Accessed December 6, 2020, from https://bit.ly/3hVnHHt

  • The Local. (2013). Meat recalled over E. coli faeces fears. Accessed December 6, 2020, from https://bit.ly/3hYXpUH

  • Van Boeckel, T. P., Brower, C., & Gilbert, M. (2015). Global trends in antimicrobial use in food animals. PNAS, 112(18), 5649–5654. https://doi.org/10.1073/pnas.1503141112.

    Article  CAS  PubMed  Google Scholar 

  • Van Rijen, M. M., & Kluytmans, J. A. (2009). Costs and benefits of the MRSA search and destroy policy in a Dutch hospital. European Journal of Clinical Microbiology and Infectious Diseases, 28(10), 1245–1252. https://doi.org/10.1007/s10096-009-0775-8.

    Article  PubMed  Google Scholar 

  • Van Rijen, M. M. L., Kluytmans-van den Bergh, M. F. Q., Verkade, E. J. M., et al. (2013). Lifestyle-associated risk factors for community-acquired methicillin-resistant Staphylococcus aureus carriage in the Netherlands: An exploratory hospital-based case-control study. PLoS One, (8), 6, e65594. https://doi.org/10.1371/journal.pone.0065594.

  • Verburg, G., & Klink, A. (2010). Deskundigenberaad RIVM en reductie antibioticumgebruik. Letter to the Parliament with as supplement an expert advice on the reduction of the antibiotic use in livestock farming. In Dutch. Accessed December 1, 2020, from https://bit.ly/2KO8NpO

  • Voss, A., Loeffen, F., Bakker, J., et al. (2005). Methicillin-resistant Staphylococcus aureus in pig farming. Emerging Infectious Diseases, 11(12), 1965–1966. https://doi.org/10.3201/eid1112.050428.

    Article  PubMed  PubMed Central  Google Scholar 

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van den Brink, R. (2021). Looking Behind the Figures. In: The End of an Antibiotic Era. Springer, Cham. https://doi.org/10.1007/978-3-030-70723-1_8

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