The swamp was full of disease carrying misquitoes. So it was bad for many people's health.
There were many anti-communist leaders during this time who unfortunately looked to Mussolini for political inspiration, although the most famous would have probably been Hitler.
I would have to assume the Orthodox Church is one of them because during that time, they had the public wrapped around their fingers and they didn't want science to prove how inaccurate their information was. Of course, I might be wrong