Play of the Day: Hillary Clinton's Pneumonia is a Very Big Deal

Ask William Henry Harrison how big a deal such an illness can be. Oh, right. You can't because he died of pneumonia.

In light of Hillary Clinton's bout with walking pneumonia, her presidential rival Donald Trump is going to speak about his own health on television this week with TV personality and Dr. Mehmet Oz. Conan O'Brien joked about this, saying Trump will later talk immigration with noted Latina cartoon Dora the Explorer.

Clinton's pneumonia continues to stay in the news, with the candidate tweeting that she's "anxious to get back to work." Late Night's Seth Meyers and Late Show's Stephen Colbert joked about the tweet, saying Clinton has no idea how real people treat a sick day from work (spoiler: we all want to keep watch TV and resting). Colbert also noted Clinton telling Anderson Cooper that her pneumonia diagnosis isn't "that big a deal," referencing William Henry Harrison's death from the disease that he contracted in the early days of his presidency.