A measles outbreak at Hong Kong International Airport has come to an end, according to local health authorities.The Centre for Health Protection made the announcement on Friday almost two months after the airport outbreak was first reported on March 22.In the 73 cases recorded in the city so far this year, 29 were related to the airport outbreak.The centre said the date any of these patients had last visited the airport during the communicable period was April 5. In general, the incubation…