I have had Covid once and I am fully vaccinated and boosted.
My sister and I contracted it at the same time, In June this year we had done a rat test (rapid antigen test) on the same day after she had lost her sense of taste and I lost my voice.
Both rates were negative, a day later she had a pcr test done and was positive, I took another rat which was positive, then backed it up with a pcr which
was also positive, (as rats had been known to provide false positives), I honestly just thought I had flu, (it was winter at this time in Australia)
We had been at Crown Casino in Melbourne with our brother at a live event, and he never had any symptoms, and so far has not had Covid at all.
During the week quarantine, I went through everything flu related, lost my voice, runny nose, very slight cough and fever.
My sister lost her sense of taste for one month, had a runny nose and a cough towards the end of her one week quarantine.
(This was late June this year)