Based on the information given, the said viral infection is known as shingles which produces Bell’s palsy — paralysis of facial muscles. The effects stated are the ones present in those who have Bell’s palsy.
The affected cranial nerve: Facial (VII) Nerve
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Facial Nerve is a mix of both sensory and motor, which explains the effects on both movement of muscle and loss of taste.
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Origin: Fibers leave the pons and run to the face
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Function: Activates the muscles of facial expression and the lacrimal and salivary glands; carries sensory impulses from the taste buds of anterior tongue
References:
Marieb, E. & Keller, S. (2018). Essentials of Human Anatomy & Physiology. New York, NY: Pearson Education
Tortora, G. & Derrickson, B. (2014). Principles of Anatomy and Physiology (14th ed.). New Jersey, NJ: Wiley