Being myself a ent surgeon I can ensure you this type of practice any doctor will do.
After each patient the endoscopes are well sterlized and then used in another patient, and in this time of covid infection everyone is taking extra precautions.
So u should not have any doubts in your mind about the sterility of instrument.
Next Steps
Keep and eye on your symptoms, if something you fell is not good u can further seek and advice.
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