U of Michigan says their analysis hints that hundred year old BCG vaccine partially protects against COVID-19

https://medicalxpress.com/news/2020-04-mandated-tb-vaccination-flattened-covid-.html

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Berg and colleagues analyzed daily reports of confirmed cases and deaths during a 30-day period, modeling differences between growth curves in countries that have mandated BCG policies at least until very recently (such as Brazil, Ireland, France and India) and countries that do not (such as the U.S., Italy and Lebanon).

While the new report contributes to research involving TB vaccinations, it also noted some limitations; for example, some countries may have better quality data regarding the number of coronavirus cases and deaths than others.

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