Nice overview of Omicron symptoms from an outbreak from a Norwegian Christmas Party.
Outbreak caused by the SARS-CoV-2 Omicron variant in Norway, November to December 2021 (Brandal Lin T., MacDonald Emily, Veneti Lamprini, Ravlo Tine, Lange Heidi, Naseer Umaer, Feruglio Siri, Bragstad Karoline, Hungnes Olav, Ødeskaug Liz E., Hagen Frode, Hanch-Hansen Kristian E., Lind Andreas, Watle Sara Viksmoen, Taxt Arne M., Johansen Mia, Vold Line, Aavitsland Preben, Nygård Karin, Madslien Elisabeth H.. . Euro Surveill. 2021;26(50):pii=2101147)
None of the subjects had a booster dose, but 89% had been vaccinated. 81 out of 111 respondents tested positive. (Six people did not respond to inquiries.) All but one of the positive tested cases had at least one symptom.
The Moderna vaccine did seem more prevalent in the subjects who didn't test positive. Of the 25 attendees who didn't test positive, 12 had Moderna vaccines (Spikevax) and 7 Pfizer vaccines.
My sister-in-law visited for Christmas. Her boyfriend got very sick. (He was vaxxed and boosted.) I've had all three Moderna shots; the boyfriend has not had confirmed Covid, but he was very sick. I'm tired, but then again, I suffered from one of the more intense episodes of insomnia last night. I've been an insomniac my whole life. I did have headaches, but that's not unusual either.
It will be interesting to see if any of us get it. My sons were booth boosted (Pfizer 2 doses, Moderna booster), but my oldest only a few days ago. My wife had all three Moderna shots; she's tired, but otherwise OK.
The incubation time seems shorter with Omicron overall, about 3 days.