Even if it is a country with universal BCG vaccination policy, the number of deaths due to COVID-19 is the highest among the countries with similar vaccination strategy. This could be due to the use of the BCG-Brazil strain, which has been found ineffective against COVID-19 (see Fig. ...
In cattle, neonatal vaccination with BCG appeared to be more effective than vaccination of 6-month-old calves and in most situations no other vaccine has been shown to be better than BCG. However, prime-boost strategies involving combinations of BCG with a protein or DNA vaccine, to improve ...