It sounds like this new vaccine would be 50% effective (including adults?), according to the ProPublica article. The old vaccine, BCG, appears to only be 37% effective on children, not adults (based on a web search - edit: on a second look, different articles are claiming wildly different effectiveness rates for BCG). The disease kills 1.6 million people annually. In other words, it sounds like this new vaccine would save tons of lives compared to the old one.
It sounds like this new vaccine would be 50% effective (including adults?), according to the ProPublica article. The old vaccine, BCG, appears to only be 37% effective on children, not adults (based on a web search - edit: on a second look, different articles are claiming wildly different effectiveness rates for BCG). The disease kills 1.6 million people annually. In other words, it sounds like this new vaccine would save tons of lives compared to the old one.