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This year has shown us the importance of good robust data - as Covid-19 spread around the world it was vital to track where it was, how many people it was infecting and where it might go next. On More or Less we’ve spent months reporting on data inaccuracies and vacuums, but what makes for good or indeed bad data? I’ve been speaking to Amy Maxmen, Senior reporter at the scientific journal ‘Nature’ about which countries are getting data collection right and which aren’t.