On a cobbled street a few blocks away, the atmosphere at Spring is heating up.

BBC: A taste of Paris

The presence of influenza is quite rare in the spring, summer and fall, when people don't use indoor heating as much and the humidity tends to be in the comfortable 50%-to-70% range, says Dr. Marr.

WSJ: Burning Question | Why Is Flu Common in Winter?

And last spring, the company redesigned the oven, replacing the traditional light bulb used for baking with an electric heating element, then switching the oven's door from the side to the front.

NPR: Burns Prompt Another Toy-Oven Recall