Virus causing hemorrhagic conjunctivitis is –
**Question:** Virus causing hemorrhagic conjunctivitis is -
A. Herpes Simplex Virus
B. Influenza Virus
C. Coronavirus
D. Adenovirus
**Core Concept:** Hemorrhagic conjunctivitis is an infectious disease characterized by inflammation of the conjunctiva, which results in redness, swelling, and discharge. The causative agents can be viral, bacterial, or fungal in nature.
**Why the Correct Answer is Right:** D. Adenovirus is the most common cause of hemorrhagic conjunctivitis. Adenoviruses are non-enveloped, linear, double-stranded DNA viruses, belonging to the family Adenoviridae. They can lead to various clinical presentations, including respiratory infections, gastroenteritis, and hemorrhagic conjunctivitis. The conjunctiva is more susceptible to adenovirus infections due to its thin and moist nature.
**Why Each Wrong Option is Incorrect:**
A. Herpes Simplex Virus (HSV) is responsible for herpes labialis (oral herpes) and genital herpes, not hemorrhagic conjunctivitis. HSV typically causes ocular lesions in immunocompromised patients or neonates.
B. Influenza Virus mainly causes respiratory tract infections and influenza-like illnesses, not hemorrhagic conjunctivitis. Although influenza virus can sometimes cause ocular manifestations, it is not the primary cause of hemorrhagic conjunctivitis.
C. Coronavirus causes COVID-19, not hemorrhagic conjunctivitis. Although COVID-19 can present with ocular symptoms, it is not typically associated with hemorrhagic conjunctivitis.
**Clinical Pearl:** Understanding the differences between viral causes of ocular infections is crucial for appropriate diagnosis and management. Infectious conjunctivitis should be differentiated from other ocular conditions like allergy, irritation, or injury. Prompt diagnosis and treatment can prevent complications and ensure proper patient care.