The currently available Covid-19 vaccines have been authorized for ‘emergency use ‘in Europe and North America. This is due to an apparent spike in Covid-19 flu cases in the northern hemisphere as winter advances. Highly advertised vaccines are being produced and rolled out at ‘warped speed’ by powerful pharmaceutical and bio-technology companies headquartered in Euro-America although their efficacy including how long their immunity lasts is not clear.
Numerous studies in many parts of the world have linked the BCG (Bacillus Calmette-Guerin) vaccination, widely used in the developing world with fewer Coronavirus cases. This is good news for countries that have universal BCG vaccination in tropical Asia and Africa.