Conversation so far:
What did Ronald Ross do in England?
In 1899, Ross resigned from Indian Medical Service and went to England to join the faculty of the Liverpool School of Tropical Medicine as lecturer.
Was Ronald Ross doing research as well as teaching?
He immediately carried out research in malaria and kala azar, for which he was assigned.

Question: Did he ever succeed in finding a prevention?
Self-contained rewrite: Did Ronald Ross ever succeed in finding a prevention for malaria?