Pre-print on correlation btwn BCG vaccine program for TB and severity of disease (deaths).
See specifically the different outcomes re: Spain and Portugal!
https://www.ft.com/content/67e1661b-f12 ... 2b5998ad73
Group A (current UBIP and equivalent, protected cohort over 30 years of age): Tai- wan, Japan, South Korea, Singapore, Slovakia, Poland, Ukraine, Greece, Portugal, Czechia (2010), Finland (2008), Germany (1998), Norway (1995), Austria (1990).
Group A (previous UBIP): Australia (c.1985), Israel (1986), Denmark (1987), Swit- zerland (c.1985), Sweden (1975).
Group C (no record of a previous UBIP, and equivalent): Italy, Belgium, Nether- lands, United Kingdom (see Notes below), Spain (Notes), USA, Ontario, Quebec (prov- inces of Canada), California, Florida, New York (states of USA).
With a time-adjusted dataset of epidemiological statistics for national and subnational jurisdictions at the time point of 6 months after the first exposure statistical significance of the correlation hypothesis between the record of universal BCG vaccine immuniza- tion performed at birth or early infancy and milder Covid-19 epidemiological scenario in the jurisdiction. The results of several qualitative observations Sections 4.1, 4.2 con- sistently point at a correlation between these factors.
In addition to convincing, in our view, qualitative arguments in support of the cor- relation hypothesis, a statistical analysis of the correlation between UBIP record and current epidemiological impact in Section 5 confirms statistical significance of the cor- relation hypothesis with a confidence of at least 0.0001. The result is consistent with the analysis of statistical significance at the time of exposure of 3 months  and in- creases the confidence in the overall conclusion because under the null hypothesis sam- ples taken at different time intervals should be considered as independent as well.
The findings of this research are in agreement with the earlier studies [1-6] support- ing the correlation hypothesis and in our view, provide a strong rationale for further research into possible mechanisms for such a broad induced protection with the poten- tial of developing effective methods of long-term immunity against a broad range of diseases.
It is hoped that time-adjusted datasets compiled in this work as the early observations obtained with it can be useful to other researchers in the field looking for effective approaches to understanding and eventually, effectively managing and controlling this and similar infectious diseases in the future.