The Centre for COVID-19 Situation Administration said the new cases had flown in from Hong Kong, Singapore, the US and the UK.
A 20-year-old man returned from Hong Kong on Sept 29 and was found to be infected on his second test despite showing no symptoms.
A 23-year-old female student flew back from the United States on Thursday and tested positive on arrival. She said she had lost her sense of smell.
A 47-year-old man returned from Singapore on Friday and tested positive on arrival.
The final two cases returned from the United Kingdom on Oct 5 and were found to be infected on Saturday. They were a feverish woman, 52, and an unrelated two-year-old girl who was asymptomatic.