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Indeed, I'm very aware of that. That's one of the reasons I agreed with my boss to self-isolate. As posted by @lowbrows a while back:
https://emcrit.org/ibcc/COVID19/#signs_and_symptoms
The frequency of fever is variable between studies (ranging from 43% to 98% as shown in the table above). This may relate to exact methodology used in various studies, different levels of illness severity between various cohorts, or different strains of the virus present in various locations. Additionally, some studies defined fever as a temperature >37.3 C (Zhou et al. 3/9/20).
Regardless of the exact numbers – absence of a fever does not exclude COVID-19.
I've been flattened for over a week Ed, I was last at work a week ago and have had some pretty scary chest tightness, horrible sore throat, aches, bad headache, runny nose etc. It's the sickest I've been for quite a long time. But zero fever and cough is occasional, so technically I can go out and infect all the people I like!
That would be dumb of course and luckily my employer is responsible, so I've been told to self-isolate and logged as a suspected case.