I don’t believe it was circulating in Calif as early as Sep. because the charts don’t reflect that. (Not to mention in most places in Sep it was still upwards of 100-105F, dry as a bone, and fires and earthquakes happening that grouped people).
But I do believe that as soon as disease was seen in Wuhan, that some citizens - dual or otherwise returned before travel restrictions were put in Jan 23-Feb 4, especially in the few days prior to the Feb 4 last call. It’s likely that our community spread is from those 16K self-quarantining travelers who came back and were lax about self-quarantine. Same as happened to Australia. The first death in the US from CCP Virus being March 1, and Calif’s being March 4, given 3-weeks-to-death, we’d have likely seen many more deaths or at least many more ICU intubations well before March if CCPVirus was widespread prior to Jan or even at the beginning of Jan.
Here are the flu charts for Calif - pretty steady and on the low side until we hit January. There was even early talk of it being a mild flu season until the year turned.
I agree with you... it was an interesting concept but the sequencing doesn’t support it either I don’t think