The best prophylaxis for a stable immune system is homeopathic constitutional treatment.
On the day of the tick bite and the two following days, take 1 teaspoon each from a solution of 2 globules Ledum C 30. (Dissolve 2 globules Ledum C 30 in a glass of water and stir with a plastic spoon)
On the 6th and 12th day after the sting, one teaspoon each from a solution of 2 granules of Aurum arsenicosum C 200. A single dose is sufficient for children.