Considering the identified symptoms, it is likely that the viral infection damaged the patient's facial (VII) nerve. This cranial nerve affects both motor (branchial and autonomic) and sensory functions. One motor (branchial) function it affects would be the control of the muscles responsible for facial expressions, which would explain the patient's inability to move muscles on the right side of her face. The facial nerve is also responsible for motor (autonomic) functions such as secretion of saliva (explaining the patient's dry mouth) and sensory functions such as taste (explaining the patient's loss of taste). The patient is also unable to close her right eye--this is likely due to the orbicularis oculi muscle being innervated by the facial nerve. If the facial nerve is damaged, such as suspected in this case, it is likely that the obicularis oculi muscle will be unable to close the eyelids properly as it usually does. Putting all the symptoms together, it is likely that the patient is afflicted with Bell's palsy, which involves symptoms such as those that presented in the patient.