Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: As recently as 1967, the World Health Organization estimated that 15 million people contracted the disease and that two million died in that year.

The World Health Organization estimated that 15 million caught the disease and 2 million died in 1967.