And if you get sick in PNG and go back to 'the world' don't waste your time seeing a GP. Go see a tropical medicine specialist. Your average GP don't know didly and they don't know what to test for. One GP asked how many standard drinks I have a week...whilst he nearly fell off his chair at my response he thought that was the problem.
I had Hep A, CMV and malaria. Fkn near kiled me and it was only after pleading with various GPs I got a referral to a specialist in NZ. Tell them where you been and what you done