Many if not most people here are mostly all carrying tuberculosis, STDs, skin mites (enjoy it when they shake your hand and you itch like hell), etc.. Enjoy. It will be "fun" in the beginning.
80% of the people in the Philippines have Tuberculosis which is a very serious illness spread by coughing. You will catch this. I did. You will then need 6 months of medicines and you will never be guaranteed to be cured. You can relapse later in life.
If the TB is multi-drug resistant, you are in big trouble.
http://www.philstar.com/health-and-family/763897/tuberculosis-philippines-10-things-you-should-know