Top, a doctor is handing medicine to a woman whose husband has influenza; middle, in a theatre the woman and the man are attending a film or lecture about the medicine, showing that it eliminates the influenza bacillus; bottom, in a bus or train a woman is giving a pill to her travelling companion, while other passengers suffer from influenza. Process print after Leonhard Fries.

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Top, a doctor is handing medicine to a woman whose husband has influenza; middle, in a theatre the woman and the man are attending a film or lecture about the medicine, showing that it eliminates the influenza bacillus; bottom, in a bus or train a woman is giving a pill to her travelling companion, while other passengers suffer from influenza. Process print after Leonhard Fries. Public Domain Mark. Source: Wellcome Collection.