Australian medical authorities warned Monday against the spread of Murray Valley encephalitis virus (MVEV), the type of virus responsible for what was previously known as Australian encephalitis, or swelling of the brain.

Craig Williams from the University of South Australia spoke to ABC news in order to warn the Aussies against the dangerous Murray Valley encephalitis (MVE).

Mosquitoes thrive in stagnant water, which is a common sight in rainy days, especially where there has been flooding.

Mr. Williams said the odd wet weather pattern which has been going on since mid-2010 must have caused a resurgence not only of MVE but other mosquito-borne viruses too.

Talking about MVE, Mr. Williams said on ABC:

"Murray Valley encephalitis, the consequences of disease from it are so dire. So with other mosquito born viruses of course they are of course very debilitating giving you rash and joint pain et cetera but if someone becomes ill with Murray Valley encephalitis, then they can suffer severe neurological disease and death is a real possibility. "

Mr. Williams further explained that MVE also exists in animal populations and is, in fact, very common in birds, particularly water fowl.

"The reality is this virus is present in birds in Australia year round," he said.

ABC's Nance Haxton brought up with that MVE claimed the life of a 27-year-old young man last year.

"People should just be careful, look after themselves in all respects and the largest part of being safe is wearing repellent and looking after, you know, making sure you don't get bitten," said Mr. Williams.