The two cases had remained in the transit area at Changi Airport throughout their time in Singapore. SINGAPORE: Two Singapore Airlines (SIA) passengers were already infected with measles before arriving in Singapore and are not linked to any other known local cases, said the Communicable Diseases Agency on Friday (Feb 27) . The individuals flew from Hyderabad, India, and transited through Singapore for two hours before boarding an SIA flight to Auckland, said Associate Professor Lim Poh Lian,