Varicella More Condition_symptoms Where Can I Get Varicella (chickenpox) Shots For Free In Houston?

Where can i get Varicella (chickenpox) shots for free in houston? - varicella more condition_symptoms

My 8 years old brother needs of varicella (chickenpox) shot before 30 March. Does anyone know a place in Houston that gives free vaccines? If so, the list below, thank you