Fowlpox virus in the Sudan

Area of Science:

• Avian Pathology
• Virology

Background:

• Fowlpox virus causes significant economic losses in poultry worldwide.
• Understanding transmission routes is crucial for disease control.

Purpose of the Study:

• To isolate and characterize a virulent fowlpox virus from a natural outbreak.
• To experimentally transmit fowlpox virus to chickens and describe lesion development and immune response.

Main Methods:

• Isolation of fowlpox virus from a field case in Sudan.
• Experimental inoculation of one-month-old chickens via scarification and intravenous injection.
• Clinical observation, antibody detection, and histopathological examination of lesions.

Main Results:

• Scarification successfully induced typical fowlpox lesions within 5-7 days.
• Intravenous injection resulted in swelling of combs/wattles by 10-11 days post-inoculation.
• Neutralizing antibodies against fowlpox virus were detected 2-4 weeks post-inoculation in intravenously injected birds.

Conclusions:

• The isolated fowlpox virus is virulent and transmissible experimentally.
• Different inoculation routes lead to distinct clinical manifestations and immune responses.
• Histopathological analysis provides insights into the pathogenesis of fowlpox infection.