Ebola would be one exception, as it is a river. But Spanish flu was not so named (if that's even a formal name) because of anything Spanish in origin; it was na

Ebola would be one exception, as it is a river. But Spanish flu was not so named (if that's even a formal name) because of anything Spanish in origin; it was named that way because Spain was the only country reporting on it due to suppression of journalists around the world, including in the U.S., due to WWI. People got all their news on the flu from Spain, so it came to be called the Spanish flu.