This document discusses HIV/AIDS epidemiology in the Philippines. It notes that the number of new HIV cases per day in the Philippines has risen sharply in recent years. While overall HIV prevalence remains below 1%, prevalence among high-risk groups has also increased. Several factors put the Philippines at risk of a broader epidemic, including increasing mobility, sex work, unsafe sex, and injecting drug use. The document also outlines how HIV attacks and weakens the immune system.