Reminder: Over 60% of the Vaccinated ALREADY Had COVID
How do you calculate the ongoing efficacy of a vaccine against a disease you're already immune to?
By now the world (minus the ladies on The View) has come to accept that natural immunity provides VERY ROBUST protection against SARS-CoV-2 (the virus which causes COVID-19).
I emailed the CDC some time ago asking for information about the survey they conduct around vaccine hesitancy. I was asking about cross-tabs when low and behold they sent me to a special “COVIDVaxView Managers Page” which allowed me to drill into the survey in ways I can’t do with the raw table.
I had never laid eyes on that table before but there are ALL KINDS of things to drill into. Here’s the most important stat to look at right now.
62% of respondents self-reported that they were 1) fully-vaxxed and 2) had gone through Covid ALREADY!
Now there are some weird things in the data here but regardless — the question is — how do you calculate the effectiveness of ANYTHING when a majority of people getting the vax were likely ALREADY immune to it?
When they compare cases for “fully vaccinated” vs. “not fully vaccinated” are they taking this into account?
When they log hospitalizations are they asking previous immunity question?
When they denote “not fully vaccinated” why don’t we have a breakdown of 1 shot, 2 shot, 2 shot+14 days or previously infected?
Honestly, this is just the tip of the iceberg. More on this “hidden” tool later.