 On Wall Street Wednesday, the Dow gained 429 points. The S&P 500 rallied 1% and closed above 5,600. Jeff Claybaugh, WTOP News. What can we do to open some people's minds about vaccines for when the time that the next pandemic comes along arrives? There's a lot of politics that goes into public health decision-making. We'll learn from a vaccine law and policy expert next. It's 8.13.