It would mean a little more if they had some figures that were a little more significant.
A slight blip after the biggest holiday in Thailand, then a slight blip after kids going back to school is expected and acceptable.
Without huge outbreaks in schools to indicate a real problem, no one is going to care. Nor should they.
The message should be "You're doing a great job. Keep it up". Unless they have some sort of ulterior motive.