I believe it, I had the original in late January early February 2021, I did get sick then. Then my wife brought it home from the hospital she works at a couple months back. She got pretty sick, fever, cought bad body aches. I felt slightly feverish for about 2 hours and that was it. It just went away. And my wife was sick for a couple days. Thought it was strange it never really effected me but hit her so hard. We are both Un-Vaxxed