The 2003 figures in fact should have been a clear warning signal, because overseas experience indicates that when HIV begins to spread through IDUs, if immediate action is not taken, there will be geometric growth for years.
這樣的爆炸性擴散是個明顯的警訊：根據國外經驗，一旦 HIV 病毒在毒癮患者當中傳佈開來，如果不馬上採取行動，每年都會呈現倍數成長。