The director of the National Institutes of Health (NIH) suggested that some businesses require vaccine credentials from customers. In recent weeks, some businesses—including a restaurant group and Broadway venues in New York City—have said that customers, not just employees, will have to provide proof they received the COVID-19 vaccine to enter their premises. When asked by a CNN anchor about more businesses requiring proof of vaccinations, NIH Director Francis Collins didn’t provide a specific answer but suggested that it would be a step forward. “As a public health person who wants to see this pandemic end, yes. I think anything we can do to encourage reluctant folks to get vaccinated because they’ll want to be part of these public events, that’s a good thing,” he said on Sunday. “I’m delighted to see employers like Disney and Walmart coming out and asking their staff to be vaccinated,” he added. “I’m glad to …