“Did you know our immune system weakens as we age, increasing our risk of diseases like pneumococcal pneumonia?” says actor Tim Daly. Photo credit: Pfizer

Featuring Tim Daly, the “Who Pneu?” Pfizer/American Lung Association campaign around pneumococcal pneumonia made an impact in social media. Unfortunately, the impact might not have been the sort for which the campaign’s benefactors were aiming. Presented without commentary, here are selected Twitter responses to “Who Pneu?

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