For humans infected with Newcastle Disease, common symptoms include?

• A. Mild conjunctivitis and influenza-like symptoms
• B. Severe hemorrhagic fever
• C. Severe neuropathy
• D. No symptoms

Answer: (C)

Newcastle disease virus is an avian pathogen, but humans can acquire it through contact with infected birds. In humans, infections are generally mild and self-limited. The most common presentation is conjunctivitis—red, watery, irritated eyes with tearing and sensitivity to light—often in one eye. Alongside this, people may develop influenza-like symptoms such as fever, malaise, cough, and sore throat. Severe forms like hemorrhagic fever or neuropathic complications are not typical and would be unusual rather than representative of the usual course. Some exposures may be asymptomatic, but when symptoms occur, they most commonly include eye involvement plus mild systemic symptoms rather than serious neurological issues. So the typical, most frequent symptoms are mild conjunctivitis and influenza-like symptoms.