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How to take care of a wasp sting
Remove the stinger if necessary.
If the stinger is still in place, remove it immediately by scraping over it with a blunt object, such as a credit card or fingernail. You can also remove it with tweezers or pliers, but try not to squeeze the venom sac, as this will cause more venom to be released.
Only remove the stinger if the person can remain still. Young children or babies who have been stung may be too fidgety to safely remove a stinger.