B08.02

Clinical Causes: Contact with infected sheep, goats, or infected carcasses Exposure to contaminated animal wool, hides, or lesions Contact with farm environments contaminated with the virus Breaches in skin integrity that facilitate virus entry

Key Symptoms: Development of pustular or ulcerative skin lesions, often on the hands, arms, or face Lesions starting as small blisters that progress into painful, raised areas Formation of scabbing or crusting around the lesions Localized inflammation and swelling Possible secondary bacterial infection leading to increased redness and pus In some cases, lesions may spread or recur if not properly managed

Diagnosis Path: Diagnosis is primarily clinical, based on characteristic skin lesions and exposure history. Laboratory tests such as electron microscopy, PCR (polymerase chain reaction), or virus isolation from lesion samples can confirm the presence of the orf virus. Differential diagnoses include other pustular skin conditions or bacterial infections, and laboratory testing helps differentiate them.

Treatment Protocols: Management of orf virus disease focuses on supportive care to promote healing and prevent secondary infections. Key approaches include: - Keeping lesions clean and covered to prevent secondary bacterial infection - Using antiseptic ointments if advised by a healthcare provider - Avoiding trauma to the affected areas - Pain relief with over-the-counter analgesics - Antibiotics only if secondary bacterial infection occurs Most lesions resolve spontaneously within a few weeks, and there is no specific antiviral treatment for the virus. Prevention through protective equipment and hygiene practices is essential for those at risk.