Maggot Therapy

Maggot Debridement Therapy (MDT) is the medical use of live maggots (fly larvae) for cleaning non-healing wounds. In maggot debridement therapy (also known as maggot therapy, larva therapy, larval therapy, biodebridement or biosurgery), disinfected fly larvae are applied to the wound within special dressings. Medical grade maggots have three primary actions: they clean the wound by removing dead and infected tissue ("debridement"), they disinfect the wound (kill bacteria), and they speed the rate of healing. This page describes the following issues:

 


History of Maggot Therapy

Historically, maggots have been known for centuries to help heal wounds. Many military surgeons noted that soldiers whose wounds became infested with maggots did better --- and had a much lower mortality rate --- than did soldiers with similar wounds not infested. There is strong evidence to suggest that wounds were intentionally infested with fly larvae by one or two confederate military surgeons during the American Civil War. But it was William Baer, at Johns Hopkins University in Baltimore, Maryland during the late 1920's, who first treated, studied, and published a sizable series of patients into whose wounds he applied maggots. Baer is also one of the first to recommend using specific species of blow flies, specially reared and disinfected for that purpose. Baer presented his findings at conferences; his results in 98 children with osteomyelitis were published posthumously by his colleagues in 1931. MDT was successfully and routinely performed by thousands of physicians until the mid-1940's, when its use was supplanted by the new antibiotics and surgical techniques that came out of World War II. Maggot therapy was occasionally used during the 1970's and 1980's, but only when antibiotics, surgery, and modern wound care failed to control the advancing wound. The first modern clinical studies of maggot therapy were initiated in 1989, at the Veterans Affairs Medical Center in Long Beach, CA, and at the University of California, Irvine, to answer the following questions:

  • "Is maggot therapy still useful today?"
  • "Should maggot therapy be used as an adjunct to other treatments, not merely as a last resort?"
  • "How does maggot therapy compare to other treatment at our disposal?"

The results of those early studies, and the many studies and reports that have followed, indicate that MDT is still useful today. By 1995, a handful of doctors in 4 countries were using MDT. In 1996, the International Biotherapy Society was founded in Wales. Today, over 3,000 therapists are using maggot therapy in 20 countries. Approximately 30,000 treatments were applied in the year 2003. In January, 2004, the U.S. Food and Drug Administration (FDA) issued 510(k) #33391, thereby allowing the production and distribution of "Medical Maggots" as a medical device. In February, 2004, the British National Health Service (NHS) permitted its doctors to prescribe maggot therapy. Patients no longer have to be referred to one of a few regional wound-specialty hospitals to get maggot treatments.

Maggot Therapy is saving Lives and Limbs everyday

 


 

Natural History of Blow Flies

Maggots, by definition, are fly larvae, just as caterpillars are butterfly larvae or moth larvae. Maggots do not appear all by themselves ("de novo"); they hatch from eggs, laid by adult female flies. Not all species of flies are safe and effective a medicinal maggots. There are thousands of species of flies, each with its own habits and life cycle. The flies used most often for this purpose called "blow flies" (Calliphoridae); and the species used most commonly is Phaenicia sericata, the green blow fly.

 

Diagram of a typical blow fly life cycle.

 


 

Clinical Practice of Maggot Therapy

Medicinal maggots have three actions: 1) they debride (clean) wounds by dissolving the dead (necrotic), infected tissue; 2) they disinfect the wound, by killing bacteria; 3) they stimulate wound healing; and 4) they dissolve existing biofilm and inhibit the formation of new biofilm. The current status of MDT practice is estimated to involve over 3,000 doctors, clinics, and hospitals in over 24 countries. In 2008, approximately 50,000 treatments were administered to over 10,000 patients. The application of maggot dressings is simple: maggots are contained in a cage-like dressing over the wound for 2-4 days. The maggots may be allowed to move freely within that cage ("confinement dressing"), with the wound floor acting as the bottom of the cage; or the maggots may be contained within a sealed pouch ("containment dressing"), placed on top of the wound. The BTER Foundation, in collaboration with community leaders, drafted a MDT Policies & Procedures template for hospitals and clinics to use when writing policies for their facility. For more details about the specific application procedures, readers are referred to the manufacturer's directions. A list of manufacturers can be found elsewhere on this site.

 


 

 

What's New in Maggot Therapy?

The BioTherapeutics, Education and Research (BTER) Foundation has produced a workshop to train health care providers in the Principles and Practice of Maggot Therapy. The workshops are held in cities accross the Country, as invitations and co-sponsors present themselves. Participants learn the indications, contraindications, and techniques of maggot therapy during this 6-hour didactic and practical ("hands-on") training workshop. For more information about the curriculum and the upcoming workshops, visit the MDT Workshop Website or contact the BTER Foundation. The 8th International Conference on Biotherapy occurred in November 2010. More information is available at this site, or from the International Biotherapy Society.

 


 

 

How to find a Therapist

We have assembled a searchable database of maggot therapists, educators and advocates who are available for contact on our Maggot Therapy Referral page. Anyone with interest, knowledge or experience in leech therapy is encouraged to contact the Foundation to be included in the referral list.

 


 

Policies & Procedures

The Foundation’s Policies & Procedures Template for maggot therapy is intended to assist first-time practitioners both with the performance of biotherapy and with obtaining the necessary administrative approvals. If you would like our P&P template for maggot therapy, click here.


 

Producers and Distributors of Medical-Grade Maggots

Licensed health care providers can obtain medical grade maggots from the following sources:

  • In the United States / North America:
    Monarch Labs 17875 Sky Park Circle, Suite K
    Irvine, CA 92614
    Phone: 949-679-3000
    Fax: 949-679-3001
    E-Mail: info@MonarchLabs.com
    http://www.Monarchlabs.com
  • In Europe and the UK:
    AGILTERA GmbH & Co. KG
    Am Krausberg 31
    D-41542 Dormagen
    Deutschland
    Phone: +49 2133 973013
    Fax +49 2133 973014
    E-mail: agiltera@t-online.de
    http://www.agiltera.com
    BioMonde Hauptsitz BioMonde GmbH Kiebitzhörn 33-35
    D-22885 Barsbüttel
    Deutschland
    Phone: +49 (0)40 6710 57-0
    E-mail: info@biomonde.de
    http://www.biomonde.de/
     
    ZooBiotic Ltd
    Units 2-4 Dunraven Business Park
    Coychurch Road
    Bridgend CF31 3AP
    Tel: 0845 2301810
    Fax: 01656 668047
    http://www.zoobiotic.com/
  • In Japan:
    Japan Maggot Company
    Hideya Mitsui, MD
    Assistant Professor of Surgery
    Department of vascular Surgery
    Okayama University Medical School
    2-5-1 Schikata
    Okayama city 700-8558
    Japan
    Tel: 9-011-81-86-235-7359
    FAX: 9-011-81-86-235-7431
    http://www.icn-jp.com/~maggot/
     
    Biotherapy Medical Company, Ltd
    Masaaki Miyamoto M.D., F.A.C.S, Director
    Associate Professor, Department of Regenerative medicine, Nippon Medical School
    TEL/FAX:0749-53-1485
    E-mail: info@btmcl.com
    http://www.btmcl.com
  • In Australia and the South Pacific:
    Merilyn Geary, Laboratory Director
    Department of Medical Entomology
    Westmead Hospital
    Westmead NSW 2145
    Australia
    Phone: +61 (2) 9845 7548
    Fax: +61 (2) 9893 8659
    E-MAIL: Merilyn.Geary@swahs.health.nsw.gov.au
  • In Egypt:
    Dr. Tarek I. Tantawi
    Department of Zoology Faculty of Science
    Alexandria University
    Moharrem Bey, Alexandria
    Egypt
    E-mail: medicinalmaggots@yahoo.com
  • In Israel:
    Dr. Kosta Mumcuoglu
    Department of Parasitology
    Hebrew University - Hadassah Medical School
    PO BOX 12271, 91120
    Jerusalem, Israel
    Phone: + 972-2-675-8093
    Fax: + 972-2-675-7425
    E-Mail: kostam@cc.huji.ac.il
    http://www.md.huji.ac.il/conf/biotherapy.html
  • In Malaysia:
    Medical Biotherapy SDN BHD
    Contact person: Mr Mohd Fairuz Muhamad Akir
    No 9C , JLN SG 3/1
    Pusat Bandar Sri Gombak,Taman Sri Gombak, 61800
    Bt Caves, Selangor
    Phone: +60361891042, +60361886042
    Fax:+60361891043
    Hp:+60127050435 Email: medbiotherapy@gmail.com
    www.sterilarvae.com

 


Related Topics

When maggots infest humans or other vertebrates, it is called myiasis. Naturally-occurring myiasis can be beneficial to the host, but sometimes it is harmful. The type of maggot and the circumstances surrounding the infestation are factors that can determine whether the infestation will be mutually beneficial parasitic. Maggots frequently furnish important legal information, and are used to help solve crimes, because their age, or stage of development, can indicate the time of death (or, more specifically, the "postmortem interval"); the presence of maggots or other insects on a body (live or dead) can also provide information about the location and/or circumstances of a crime. The study of maggots and other insects in this role is called Forensic Entomology.
Have a maggot or fly question that was not answered in this article or the references below? Visit our Frequently Asked Questions page, or ask your question on our Biotherapy Forum.
For videos of patients, therapists and the general procedure of maggot therapy, visit our videos & media pages.
For Policies & Procedures and other resources that you can view or download from the BTER Foundation website, visit our Guidelines, Policies & Procedures pages.


 

MDT References

Note that these and other references will soon be available to members, through our virtual library service. You may also visit our more extensive References and Clinical Studies page for maggot therapy here.

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  53. Steenvoorde P, Oskam J. Bleeding complications in patients treated with maggot debridement therapy. Int J Low Extrem Wounds. 2005 Mar;4(1):57-8. PMID: 15860453
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  67. Wolff H, Hansson C. Larval therapy for a leg ulcer with methicillin-resistant Staphylococcus aureus. Acta Derm Venereol. 1999 Jul;79(4):320-1. PMID: 10429993
  68. Wollina U, Kinscher M, Fengler H. Maggot therapy in the treatment of wounds of exposed knee prostheses. Int J Dermatol. 2005 Oct;44(10):884-6. PMID: 16207200
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MDT Links and Web Resources

  1. Maggots Faster Than Scalpel in Wound Debridement, by Emma Hitt, PhD. Medscape Medical News, December 19, 2011.
  2. Maggot Therapy May Assist in Wound Healing, by Denise Mann. WebMD Health News, December 19, 2011.
  3. Maggot Debridement Promotes Healing of Long-Standing Wounds, by D. Keller. Medscape Medical News, September 28, 2011.
  4. Grubs up. By Hugh Wilson; The Independent (March 1, 2005)
  5. Leeches, maggots and parasitic worms can play healing role By Carol M. Ostrom; Seattle Times staff reporter (August 04, 2004).
  6. Medieval Miracle Workers - Are Maggots Making a Medical Comeback? By Jennifer Wenger; NIH Record, July 20, 2004; Vol. LVI, No. 15.
  7. Tiny surgeons: Maggot therapy clears the dead tissue cleanly, by Christopher Snowbeck, Pittsburgh Post-Gazette, July 13, 2004.
  8. Maggots and leeches: Good medicine By Rita Rubin, USA TODAY, July 7. 2004.
  9. Maggots Best in Debriding Nonhealing Ulcers, by Laurie Barclay, MD. Medscape Medical News, January 31, 2003.
  10. BBC News (Maggot medicine gains popularity; April 6, 2002
  11. BBC News (Doctor! There's a maggot in my wound; 3/6/99)
  12. BBC News (Maggot Cure for 'Unbeatable' Bug; 3/19/99)
  13. CNN Online (10/20/97)

  14. Science Daily (Maggot Therapy; 8/16/2004)
  15. Maggots Clean Wounds Faster Than Surgeons by Rachel Rettner, Yahoo News; 12/19/2011)
  16. Live Science (Maggot Therapy Gains Popularity;11/19/2008)

BioTherapeutics, Education and Research (BTER) Foundation
36 Urey Court   Irvine,  CA   92617
Phone: 949-246-1156;     Fax: 949-679-3001
E-mail: info@BTERFoundation.org
www.BTERFoundation.org
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