Is chatting bad for your health?

A study says that Hongkong residents are more likely to catch the flu because they talk too much, loudly. They talk while they walk down the streets, while eating, and they have the highest concentration of mobile phone activities as well. But it's also possible that the high risk of getting the flu has to do with population density and the brisk movement of people around the island.

It's also weird because I thought the article had something to do with chatting the mIRC or the IM/icq way. But no, it's just talk.