Epizootic ulcerative syndrome,
Information received on 21/09/2020 from Dr Patrick Chikungwa, Director of Department of Animal Health and Livestock Development, Department of Animal Health and Livestock Development, Ministry of Agriculture, Irrigation an Water Development, LILONGWE, Malawi
Report type Follow-up report No. 4
Date of start of the event 16/06/2020
Date of confirmation of the event 17/07/2020
Report date 21/09/2020
Date submitted to OIE 21/09/2020
Reason for notification First occurrence of a listed disease in the country
Causal agent Aphanomyces invadans
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (24/07/2020)
Follow-up report No. 1 (04/08/2020)
Follow-up report No. 2 (11/08/2020)
Follow-up report No. 3 (26/08/2020)
Follow-up report No. 4 (21/09/2020)
Follow-up report No. 5 (28/10/2020)
Outbreaks There are no new outbreaks in this report
Source of the outbreak(s) or origin of infection
  • Horizontal spread through water
Epidemiological comments Surveillance is underway in the natural water sources and the aquaculture. There have been 3 rumors in the adjacent districts to the infected ones which have been investigated and no proof of epizootic ulcerative syndrome. Awareness is also being done to the communities and the nation through meetings with fishermen and pond owners as well as through the radios.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside infected and/or protection zone
  • Surveillance within infected and/or protection zone
  • Quarantine
  • Emergency harvest
  • Disinfection
  • Process to inactivate the pathogenic agent in products or by-products
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.