The 100 year old BCG vaccine may have yet another “good side effect”

https://medicalxpress.com/news/2020-03-vaccine-bcg-immune-boost-coronavirus.html

Israeli researchers recently reported that BCG vaccine might also reduce the chance of getting Alzheimers:

https://medicalxpress.com/news/2019-12-tuberculosis-vaccine-lowers-alzheimer-disease.html

BCG vaccine was in the news recently when it was discovered that perhaps it has been given wrong for over 100 years. Giving BCG vaccine in a vein instead of the traditional “under the skin” seems to work much, much better:

https://medicalxpress.com/news/2020-01-tb-vaccine-intravenously-potency.html

Edit:
More on BCG efforts around the world with explanations of how your immune system works:

https://www.sciencemag.org/news/202...el-immune-system-against-new-coronavirus