It is normal to not have had chickenpox.
Chickenpox is caused by varicella-zoster etiology, everyone’s physical condition is different, some people may have chickenpox, some people may never have chickenpox in their life, this situation is relatively normal, not all people will have chickenpox, there are individual differences.
If the patient has a strong resistance, or if the varicella-zoster virus invading the body is small in number and weak in virulence, or if the patient has been previously vaccinated against chickenpox, etc., he or she may not develop chickenpox. Patients who have had chickenpox in the past are unlikely to develop the disease a second time.
Personal protection is needed when chickenpox is present. Chickenpox is highly contagious, and it is best not to be in frequent contact with other people to avoid spreading the disease to others.