【明報專訊】Last week, Doctor C's tiny clinic in a quiet Hong-Kong-Island street was jam-packed, as it is during any other peak flu season. Old Cheng came on the earliest ferry from Cheung Chau, while Jessie, a mother of two, was straight out of her little son's school in Sham Shui Po. Not far down the queue was Karen, a Filipino helper, who took leave from her employer in Shau Kei Wan. The three of them winked at each other, sending friendly non-verbal greetings across the floor.