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| Avian Influenza - IV |
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| Dr. Rayne Joseph, Disease Investigation Officer, CDIO, Palode |
| Equipments for sample collection
Sterile swabs,
specimen tubes / bottles, sterile disposable syringes with needles, vials and
Petri dishes, scissors, forceps, gloves and face mask.

Materials to be collected
- Throat swabs / Cloacal swabs
- Fresh droppings from migratory birds/ domestic
birds.
- Serum samples - minimum of 0.5 ml
- Carcass of the suspected bird on ice.
Dr. H.K
Pradhan of High security Animal Disease Diagnostic Laboratory (HSADL) insists
that 1-2 gram of fresh fecal sample in transport media is the best clinical
sample in the case of migratory birds. Serum samples can be collected from
domestic poultry around the migratory areas. From dead birds collect pieces of
trachea, lung and intestinal contents in transport medium.
Transport media
Any viral
transportation media can be used for the collection of samples. Sterile
phosphate buffered saline of pH 7.2- 7.4 is the media of choice. Tissue culture fluid or 50% Glycerol
phosphate buffer can also be used for the collection of sample. Always ensure
that the pH of the media is7.2- 7.4 since an acidic pH will destroy the
virus. After placing the sample any one
of the following antibiotic should also be added to the media for preventing
contamination of the sample.
- Penicillin - 2000 units / ml
- Streptomycin – 2 mg / ml
- Gentamycin – 50 μg / ml.
Precautions to
be taken while handling suspected birds
Stringent health precautions are essential
during handling of suspected ailing / dead birds for sample collection as the
disease is highly contagious for humans. So it is imperative that all persons
collecting samples should wear protective clothing and care should be taken
that neither the veterinarian nor assistants puncture the skin of their hands.
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