Xylocaine to Freeze During Unpleasant Nasopharyngeal Swabs

The study intervention was the administration of 10 mg of intranasal lidocaine in one nostril using 1 spray of 0.1mL of a 10% lidocaine solution 5 minutes before NPS. This was done using the standard long nozzle

The control group received the placebo with the same application technique using an empty bottle of lidocaine 10% with the same long nozzle for delivery