Whichever news agency flooded the world with this should be sued for damages by all those who will likely lose as a result.

18 people living in an institution at the height of the influenza season in HK caught influenza. They are amongst the many thousands of others who have flu in HKG at the moment. (A disease from which hundreds of thousands of people DIE every year in the USA alone)

As a precaution, swabs are taken for SARS despite there being no real reason to do so. This is not news.