I used the results of this epidemiological study as a basis for my analysis:
https://www.mscbs.gob.es/ciudadanos/ene-covid/docs/ESTUDIO_ENE-COVID19_INFORME_FINAL.pdf
I also used data from the following report on excess mortality:
https://www.isciii.es/QueHacemos/Servicios/VigilanciaSaludPublicaRENAVE/EnfermedadesTransmisibles/MoMo/Documents/informesMoMo2020/MoMo_Situacion%20a%2021%20de%20septiembre_CNE.pdf
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The creation of IgG starts 7-10 days after the first symptoms appear. In the first week the sensitivity is only about 30%. From the 3rd week onwards IgG reaches a sensitivity of about 94%.
The IgG antibody tests were recorded in the following periods: /15
IMHO: The lockdown in Spain has saved many thousands of lives. Nevertheless, I am of the same opinion as Tomas Pueyo. Because of the second wave, a new nationwide lockdown is currently not necessary in Spain or anywhere else in Europe. /18
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RT @tomaspueyo
What's going on in Europe? Is there a 2nd wave? What can we expect in the coming weeks? Thread.
Europe had a terrible 1st wave, beat it at the beginning of the summer, but wasn't…
https://twitter.com/tomaspueyo/status/1302215472415297536
Conclusion:
The thesis that excess mortality is a consequence of a lockdown has been refuted. The regression line intersects the X-axis, i.e. there is no excess mortality where there are no infections. /16