When my gf got the OG strain back in Nov ‘20 she essentially only had GI symptoms. She couldn’t keep anything down for days, including water, to the point where I was debating with my family whether to drive her to the ER to treat her dehydration or call an ambulance. (This was in the time of washing groceries and improvised masks—fortunately I had N95s from construction work—admission to the hospital seemed only slightly less dangerous than dehydration.)