Here's what you do for an insect, spider, or snake bite.... or even poison ivy
etc.
Get a 6 Volt battery, connect the leads via wire to sponges that have been
mostened. Place the sponges on both sides of the bite for 30-60 seconds or
longer so that this mild level of electricity runs through the bite spot.
This will send trillions of electrons through the afflicted area and this
changes the proteins causing the reaction to a form that does not cause a
reaction. Problem solved.... in seconds.
For more info, there are online discussions and yahoo groups such as
micro-electricity germ-killer. These sites have some cautions.... such as a
prohibition against putting a lead in an open sore or abrasion, and also
against the dangers of using more than 6 volts.
Best of luck.