I am diagnose with syphilis in month of june 2017 after that I was taken all treatment inj benz. Penicillin total 3 inj, weekly 1 inj and also take the doxycycline 15 days 12hrly after the 3 month I was check or test my blood for syphilis then test was negative and after 9 month in feb 2018 then also test was negative .so I am free from syphilis? Or need to follow up the test. I also check for hiv test was negative .so please guide me .syphilis is curable na?