What was the purpose of the warsaw pact?

La pintura escena de inquisición, hecha por francisco goya, muestra

Which is likely the most serious problem associated with an epidemic? 1. there are sometimes no cures to the diseases that spread. 2. people often die from the diseases that spread. 3. there are usually no ways to prevent people from getting ill. 4. people often don’t know they have a disease.

From which of the following literary works is this quotation most likely taken?