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You seem to have a phobia about rabies.
You could benefit from counselling. If that does not work, then you might need anti-anxiety drugs.
Practicing meditation can also take your mind off it. Basically, you need to divert your mind elsewhere. The less you think about it, the less it will bother you. In a few weeks, you will see that the intensity of the phobia has significantly decreased. The key is to ignore these thoughts, however pressing they may seem.
Hope this helps.
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