The yearly battle against the flu claims at least -20,000 US lives- each year, -putting 225,000 people in the hospital- and infecting up to 50 million in total. Antiviral drugs can tip the scales, but antiviral resistance threatens every bit of progress we’ve made against this fast-mutating group of pathogens. But a possible new medication could shift the balance back in our favor. Antiviral Resistance...