They say that antibody levels spiked for COVID recoverees after their 1st dose (compared to non-recoverees), similar to the 2nd dose boost. What they don't say is how those spikes compare for recoverees whose antibodies waned. If all they did was aggregate the data it shows nothing about the issue in question (per the headline).
Well. In June I got a "positive" antibody test (no numeric value). In October my antibody level on a test that gives a numeric reading were just below the threshold to be considered positive.
On 1/28 I got a low antibody reading on an Ortho VITOS SARS- CoVID-2 IgG kit
On 2/17 I got my first dose of Moderna vaccine.
On 2/21 I got a 6.9 Negative IGG where reference is < 9.0 (I was told that that test only detects/tests for naturally occurring antibodies, not those that show up as a result of a vaccine).
On 2/23 I got a 7763 IgG reading (results took almost 72 hours to come) where reference is 51-150 to be considered positive for someone previously recovered or vaccinated or over 150 to be considered positive without prior documented recovery or vaccination.
On 2/25 I got a 4810 reading (in about 6 hours) on a test where reference is > 15 to be considered positive.