Equine influenza,
Information received on 29/05/2018 from Dr Ricardo Alfredo Maresca, Director Nacional de Sanidad Animal , Sanidad Animal, Servicio Nacional de Sanidad y calidad Agroalimentaria (SENASA), Ciudad Autonoma de Buenos Aires, Argentina
Report type Follow-up report No. 4 (Final report)
Date of start of the event 20/03/2018
Date of confirmation of the event 23/03/2018
Report date 29/05/2018
Date submitted to OIE 29/05/2018
Reason for notification Unexpected change in the distribution or increase in morbidity or mortality of a listed disease
Summary description On March 20th, an outbreak was detected in the hippodrome of the city of Mendoza (province of Mendoza), with a morbidity rate close to 70%. Later on, similar outbreaks were registered in the hippodromes of San Isidro, La Plata (Buenos Aires), Palermo (Buenos Aires) and Trelew (Chubut). An outbreak was also registered in Barreal (San Juan).
Manifestation of disease Clinical disease
Causal agent Equine influenza virus
Serotype H3N8
This event pertains to a defined zone within the country
Related reports Immediate notification (05/04/2018)
Follow-up report No. 1 (19/04/2018)
Follow-up report No. 2 (04/05/2018)
Follow-up report No. 3 (11/05/2018)
Follow-up report No. 4 (29/05/2018)
Source of the outbreak(s) or origin of infection
  • Legal movement of animals
  • Contact with infected animal(s) at grazing/watering
Epidemiological comments Currently, no new cases are being reported in the farms affected by the equine influenza epidemic and the occurence values of the disease are in line with what is expected at this time of the year. Subtyping of H3N8 virus: Florida, clade 1.
Increased Distribution
Disease Impact
Increased Provincia Species Change
Morbidity Buenos Aires Equidae 1=>1
Morbidity Ciudad Autonoma De Buenos Aires Equidae 1=>1
Morbidity Cordoba Equidae 1=>1
Morbidity Tucuman Equidae 1=>1
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance within containment and/or protection zone
  • Traceability
  • Quarantine
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Future Reporting
The event is resolved. No more reports will be submitted.