Breaking through a round-number barrier like that usually gets some attention. I am surprised that this got literally no coverage in the Virginia press. (Or, at least, Google reveals nothing in the first couple of pages of search.)
This isn’t a big change or anything. It’s consistent with trend plus some random variation. Still, the last time Virginia had a one-day new COVID-19 case count that low was back before Halloween.
It has been a long fall and winter. Definitely looking forward to spring.
In Fairfax County, VA, we’re down to roughly 150 new cases per day. Allowing a generous seven-day infectious period for the average case, and allowing five cases total for every diagnosed case, the odds that any random person you meet is infectious work out to (150 x 5 x 7 / 1,146,000 = ~) 0.5%. Call it 1-in-200. (This ignores the independent cities of Fairfax and Falls Church).
In the main ZIP code for Vienna, VA (22180), we’re down to about 5 new COVID-19 cases per day. The analogous calculation yields (5 x 5 x 7 / 24440 = ~) 0.7%. That’s unexpected, as Vienna largely dodged this early on. Our new case rate now exceeds that of Fairfax County.