HIPAA protects your information from being disclosed by your doctor to a third party without your permission. That's it. No further than that.
It does not protect you from your job asking you directly about your health information. It does not protect you from the government from asking you about your health information.
There are other laws, usually local, that may offer that sort of protection, but many of them specifically exempt vaccines. You'd need to research your local laws to figure that out.
But unless a third party is asking a medical professional or someone privy to your medical information (like HR) about your medical information, HIPAA is not the law that is going to apply.
HIPAA protects your information from being disclosed by your doctor to a third party without your permission. That's it. No further than that.
It does not protect you from your job asking you directly about your health information. It does not protect the government from asking you about your health information.
There are other laws, usually local, that may offer that sort of protection, but many of them specifically exempt vaccines. You'd need to research your local laws to figure that out.
But unless a third party is asking a medical professional or someone privy to your medical information (like HR) about your medical information, HIPAA is not the law that is going to apply.