Should I upload old or just current data?

Both please! Schools should backdate their data to the beginning of the year (05/09/2011). This will be really helpful as it allows us to establish what sort of range that the levels of school illness vary between when there are low levels of flu in the community. The more data that schools enter, the greater certainty we’ll have about this baseline level and this is important as it helps us know when there might be a peak.