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Avian Influenza in Bangladesh: Control Strategy

Avian Influenza in Bangladesh: Control Strategy. Dr. Muhammed Salehuddin Khan Director (Animal Health and Administration) Department of Livestock Services Bangladesh . Bangladesh is a country located in South Asia

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Avian Influenza in Bangladesh: Control Strategy

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  1. Avian Influenza in Bangladesh: Control Strategy Dr. Muhammed Salehuddin Khan Director (Animal Health and Administration) Department of Livestock Services Bangladesh

  2. Bangladesh is a country located in South Asia • It is bordered by India on all sides except for a small border with Myanmar to the far southeast and by the Bay of Bengal to the south • Area : 147,570147,570 km² • Population: 150,448,340 • Population Density : 1045/ km² Bangladesh at a glimpse

  3. Poultry Production System in Bangladesh • Poultry Population- • Chicken – 210 million • Ducks - 38 million • 50% of Poultry are reared in the backyard and 50% are in commercial sector • Over 80% of rural households rear backyard chicken • Ducks are found in almost every part of the country but are more concentrated in areas with large water bodies Continue------

  4. -------Continued Poultry Production System in Bangladesh • In the last two decades the commercial sector has grown very fast • Commercial sector comprises of – • Grand Parent stock, Parent stock breeder operations • Large and medium scale layer and broiler operations • Small scale layer and broiler operations • Cockerel farms • Intensive Semi intensive farm with improved variety

  5. Field Veterinary Services • Extended to 480 Sub-districts (Upazila) across the country • An Upazila Livestock Office is staffed with – • 2 professional staff • 6 Para professional staff • 3 other support staff • Vaccination against common poultry diseases is carried out usually by 4 designated Para Professional staff and trained poultry vaccinators. • District Livestock Officer is in charge of average -6 Upazilas. • Director (Animal Health and Administration) is designated as Chief Veterinary Officer of the country and responsible for overseeing the animal health activities.

  6. HPAI situation in Bangladesh • HPAI was declared by the Government in 22nd March, 2007 • The disease moved to the South western part quickly within few • days and first incidence from backyard flock (native chicken) was • detected in April, 2007. • Within a month disease moved to Northern part of the country. • The first wave continued till July 2007 with steady regression of • number of cases. • Total Number of outbreaks were 55 during the first wave.

  7. HPAI situation in Bangladesh • No disease was reported in August 2007 • Second wave of outbreak started in September 2007 • The number of outbreaks was climbing steadily and it reached its peak in February 2007 with 96 outbreaks • Number of outbreaks during the second wave till 18 March is 187 • Outbreaks were reported in both backyard poultry and commercial chickens • No outbreak is reported in ducks till to date

  8. Epidemiology Curve of HPAI in Bangladesh March 18 2007

  9. Reason for not Undertaking Vaccination • Backyard poultry constitutes about 50% of the total poultry population • Most of the house hold ( about 80%) rear chickens or duck • A large duck population across the country • Many small scale commercial farms across the country • Commercial farms are in close proximity to backyard chickens • Disease is sporadically found in Backyard chickens Managing vaccination under this situation is a difficult undertaking

  10. -------Continued Reason for not Undertaking Vaccination • The vaccination programme covering backyard poultry will be a difficult undertaking • Vaccination keeping the backyard poultry outside will put the total programme at risk • This is an expensive vaccine and needs lots of funding • Intensive training and communication will be needed • Post vaccination monitoring and identify vaccinated backyard birds are difficult due to poor laboratory facilities • Poor understanding about the type and character of circulating virus • Difficult to produce vaccine locally and dependence on importation • The results of vaccination in many countries are not encouraging in particular countries with similar husbandry practices in poultry rearing

  11. Alternative Government Policy for HPAI control • Depopulation of all birds in 1 Km radius of infected premise • Destruction or decontamination of all contaminated materials of the infected premise • Complete disinfection of infected and contaminated premise, transport and vehicle • Movement control of poultry and poultry product in the control zone • Strong communication and awareness building

  12. Thank You

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