This is wrong. The Czech Republic and Greece were before.
Italy on 23 January suspended direct flights from Wuhan and but direct flights from the rest of China on 30 January. Indirect entries into Italy were not stopped.
You could be right, but I've read several sources saying Italy was first to ban travel from China, which was indeed at the end if Jan., but
THIS REPORT says - the Czech government announced the ban on direct flights between the Czech Republic and China due to the new coronavirus outbreak on February 3rd. , and I can't find anything about Greece doing the same, although
THIS REPORT mentions - Air China will cancel flights to Athens, Greece, from Feb. 17, so clearly they weren't banned before that. So, it appears Italy was first.
For instance one of the cases is a professor who went to central Italy had no symptoms but did not self-isolate as per guidelines so has infected several students in King's College London.
Google isn't bringing-up anything about a 'professor... infected several students in King's College London', there's just reports of one student testing positive.
But, whatever, my main point remains, it's pointless to keep banging on about closing schools etc. at this time, when the various Chief Medical & Scientific Officers across the four nations of the UK disagree, based on, err, science.