I had my blood test last January VDRL - NON REACTIVE, HIV - NON REACTIVE and TPHA/TPPA - NON REACTIVE but when i had blood test again this May its shows VDRL - NON REACTIVE, HIV - NON REACTIVE and TPHA/TPPA - REACTIVE. I had my syphilis before and i took antibiotics and penicillin. I am now worried that i might not pass to work for a cruise since my TPHA is REACTIVE. Do I still have syphilis and can i work in a cruise?