Looks like mainstream media's now onto another drug... maybe based on the following article?:

https://www.biospace.com/article/-can-an-old-...covid-19-/

Today, the only effective tuberculosis vaccine in common use is bacilli Calmette-Guérin (BCG), first used on humans in 1921.
Tuberculosis vaccines - Wikipedia

Unlike Leronlimab which is said to have no side effects, this BCG has some:

https://www.drugs.com/sfx/bcg-side-effects.html