nprnews_____ = ||| lubuntu at wor2 1TXN|||Johnson & Johnson Vaccine Is 66% Effective In Preventing Moderate To Severe COVID-19||| kickerpage = |||no kicker pagenpr for NPRNEWS||| summarynpr = |||The vaccine did better at preventing disease in this country – 72% percent — and less well in South Africa – 57% efficacy. The efficacy seen in Latin America was 66%.