The Centre for Health Protection is investigating a suspected case of Middle East Respiratory Syndrome, or MERS, affecting a man aged 68.
He is in isolation at Princess Margaret Hospital and his condition is stable.
He arrived in Hong Kong from Sweden via Dubai on May 29.
He did not visit healthcare facilities, or have contact with camels or consume camel products in Dubai.
He has developed symptoms, such as a cough and runny nose, since May 31.
Test results are pending.
