Temperature OR a cough (or both).
Also viral fevers do often fluctuate.
All this incredulity and nastiness is obviously borne of frustration, fear and not directed solely at you OP. It’s more that by you asking that question it confirms that there are potentially many more who haven’t, can’t or won’t understand the very basic, clear instructions that the government have issued.
Essentially, the implications of the guidelines not being understood by many are terrifying- especially for the more vulnerable people in society.
You asked this here, which was preferable to not asking, for all we know there are hundreds or thousands of parents across the U.K. who also haven’t understood and will send their child in to school tomorrow, or not isolate themselves or their
Maybe instead of directing all that anger at the OP we should be asking why people haven’t understood it and what can be done to get the message across. It needs to be everywhere, the 7 days off with new cough or temperature repeated over and over with the word OR flashing in red maybe!?
Fuck knows, it does make me despair a bit just because it exacerbates the potential of disaster (already looming due to this being the only measure taken and widely considered to be dangerously weak and ineffective).
However, I do think we should all try and be more understanding, there are people with learning difficulties or processing problems, who just aren’t that bright or don’t watch or follow the news or can’t read or perhaps process instructions easily or myriad of other issues (mental health included where their own problems are overwhelming to them to the point they can’t take it on board) which might mean they may not be able to grasp the concept properly. They need help and understanding - and educating - not vitriol surely?