There are different kinds of disorder. Jim’s fear would most likely be attributed to Nosophobia.
The word is known to originate from Greek word ‘nosos’ and 'phobos' that implies disease and fear. It is also called cyberchondria and often liken to hypochondriasis.
The major difference between the two is that A person with hypochondriasis thinks they have a life-threatening illness even if they do not have physical symptoms but a person with nosophobia, is afraid of contracting a specific disease and are very convinced that they could have the symptoms of that specific disease.
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