The correct answer to this open question is the following.
Unfortunately, your question is incomplete.
Indeed, there is no question here. Just a statement. If this is a true or false question, the answer is "false."
It is false that social media postings have been found to be an unreliable predictor of flu outbreaks.
We already know that social media has advantages and disadvantages. There are many lies in social media, however, it has served to convey valid and good information when needed. In the case of the pandemic, social media has served to transmit information that can prevent the public to take some actions against the flu.
On the negative side, some effects of social media are: Many people experience a loss of privacy, some people have fewer social relationships, and) some people have been harassed by cyberbullies.