Ex 12:13 – And the blood shall be to you for a token upon the house where ye are: and when I see the blood, I will pass over you , and the plague shall not be upon you to destroy you, when I smite the land of Egypt.

Sickness is a plague. That sickness or plague is destroyed by the power in the blood of Jesus Christ, see the blood of Jesus protecting and debarring all forms of sickness from coming near you and your family in Jesus name!