Bacillus Calmette‐Guérin vaccination and socioeconomic variables vs COVID‐19 global features: Clearing up a controversial issue

Bacillus Calmette‐Guérin vaccination and socioeconomic variables vs COVID‐19 global features: Clearing up a controversial issue

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To the best of our knowledge, this is the first study assessing at the global level the impact of BCG vaccination on COVID‐19 outcomes by integrating a wide set of social, economic, geographic, and demographic controls, thus attenuating if not eliminating altogether the effects of possible confounding factors affecting previous studies on BCG and COVID‐19.