Hi experts, so I had an unprotected exposure 4 mpnths and had secondary syphilis symptoms (Rash on the body, bad muscle ache, chills, fever, fatique). I did HIV and VDRL tests. HIV 4th gen came back negative but VDRL came positive with 1.64 titre. I was treated with Penincilin 2.4 on my butt. My question here is 1.64 does it mean the infection is too high and Ill need more injections. How much time it takes for Syphilis to cure after treated. Thanks