Let’s talk about something important…

No…this isn’t “put that coffee down“

But Tracy got her second Moderna shot on Monday and Barbara got hers on Tuesday.

Now about the vaccines and efficacy: it works something like this:

In the case of Pfizer, for example, the company recruited 43,661 volunteers and waited for 170 people to come down with symptoms of Covid-19 and then get a positive test. Out of these 170, 162 had received a placebo shot, and just eight had received the real vaccine.

Now, the data as to who gets counted toward the final numbers is a bit more complicated that I am making it appear; you can see a full report here.

But, for the sake of argument, suppose the 43,661..I’ll round this to 43,660 had exactly the same number of placebo and actual shot. that is 21830 in each group.

So to calculate efficacy, we first calculate and then subtract this from 1 to obtain .9506, which you multiply by 100 to get 95.06. So, the “efficacy” is 1 minus the ratio of the percent of the treatment group getting sick to the percent of the placebo group getting sick. If the ratio was 1, that is “no difference.”

Cool beans!

Now…for the unimportant: today’s walk pretty much sucked. It was the first outdoor walk in a while and let’s just say that while the first mile was ok; the part through the “brick portion” was unusually bad..and there was a ton of slippery “almost ice” on the pavement which had seal coat.

And yeah, it hurt..kind of tingly but ok at mile one and full blown “it hurt” by 2…and dodging cars, construction, repairs, piles of snow on the walks..just not a joyful walk, at all.

It seems as if pushing a bit too much with the lower deadlifts inflamed it…need to be warmed up. The split leg stretch on stairs makes it feel good.