MATTHEW Buangpalendeng was gazing wearily. For two days, he had diarrhea every time he drank milk from Selly Karudeng, his mother. He could only drink tea or plain water. Earlier, he had been overcome by nausea and vomiting. On Tuesday last week, from their home in Warakas, a dense settlement for lower- and middle-income people in North Jakarta, the mother and child went to the public health clinic at Tanjung Priok. Waiting in the queue, Selly he