Quick analysis of b.1.117 (UK variant), and the next 2 months.
Nationally- number of cases is doubling a bit faster than once per two weeks. (R = 1.4 or so.). Currently at 15K or so cases per day. Expect it to continue doubling until vaccines cover enough additional people to counteract the higher R. That is, we need to vaccinate 4/14 of those who are not yet immune. 2/7 x .84 = another 24% of the country. 80 M more people vaccinated. 2 months before it turns around for vaccines. 4 more doublings. 120K cases per day peak.
Big things I missed: 1- recovered b.1.117 cases will bring the peak lower. 2- Any vaccinations will slow the doubling, even if we don’t get to 80M more. 3- Over excited reopening will make the peak go higher. I am treating these as offsetting each other, but I suspect the third factor is bigger than the first or second.
California- b.1.117 has stalled at 15% of cases. Dad guess is that b.1.117 can’t make further inroads because it isn’t much stronger than the already dominant LA variant. If true, it means CA won’t have a b.1.117 peak. However, CA is opening dining, theaters, and stadiums, so expect case counts to remain high for a while. Case counts can’t go up too far without putting us back in purple and closing it all down again.
So, another national peak in the 100K-150K cases per day range. CA hanging out at the red/purple boundary. (Cases go down, open something stupid. Our stupid thing forces cases back up, close down the stupid. Repeat.)
Be glad the line for soccer is at 14 instead of at yellow. With dining open, I am no longer optimistic that we can hit yellow this spring.
(again, not an epidemiologist. So don’t take this too seriously.)
Nationally- number of cases is doubling a bit faster than once per two weeks. (R = 1.4 or so.). Currently at 15K or so cases per day. Expect it to continue doubling until vaccines cover enough additional people to counteract the higher R. That is, we need to vaccinate 4/14 of those who are not yet immune. 2/7 x .84 = another 24% of the country. 80 M more people vaccinated. 2 months before it turns around for vaccines. 4 more doublings. 120K cases per day peak.
Big things I missed: 1- recovered b.1.117 cases will bring the peak lower. 2- Any vaccinations will slow the doubling, even if we don’t get to 80M more. 3- Over excited reopening will make the peak go higher. I am treating these as offsetting each other, but I suspect the third factor is bigger than the first or second.
California- b.1.117 has stalled at 15% of cases. Dad guess is that b.1.117 can’t make further inroads because it isn’t much stronger than the already dominant LA variant. If true, it means CA won’t have a b.1.117 peak. However, CA is opening dining, theaters, and stadiums, so expect case counts to remain high for a while. Case counts can’t go up too far without putting us back in purple and closing it all down again.
So, another national peak in the 100K-150K cases per day range. CA hanging out at the red/purple boundary. (Cases go down, open something stupid. Our stupid thing forces cases back up, close down the stupid. Repeat.)
Be glad the line for soccer is at 14 instead of at yellow. With dining open, I am no longer optimistic that we can hit yellow this spring.
(again, not an epidemiologist. So don’t take this too seriously.)