Rising Temperatures Causes New Strand of West Nile to Spread
Earlier, I wrote about how the rise in temperature has caused a change in the type of fish in the Rhode Island Sound. And I said in the article that the rise in the temperature on the Earth could impact us. Well, it does. West Nile Virus first appeared in 1999 as we all remember. It was spread by mosquitoes and we were told to ensure that we didn’t keep damp environments around because of the fear of mosquitoes multiplying and then spreading West Nile. That was a common fear, but it only spread even more when, in 2002, a new strand of West Nile Virus appeared. By 2005, it had replaced the old strand and had caused numerous deaths. Now, over 100 people a year die from this strand.
So, what happened? How did this strand of West Nile Virus do so much damage while the other one didn’t? And more importantly: how did it spread so fast? Two scientists, Kilpatrick and Kramer, conducted an experiment to try and determine what effects temperature had on the spread of the virus and to try and determine when the virus can be transmitted by mosquitoes. What the studies showed was that this new strand was much easier passed from mosquitoe to human than the old strand. What they also found was that this new strand had a better advantage when the temperature increased.
Both strands were able to increase its spread when the temperature was higher. What this means is that as the heat on the planet increases, the increased replicating of the virus will continue to rise and the spread of the virus will continue quickly. This new strand is better at replicating in the mosquitoe because of the increased temperature, scientists suggest. Now what they are looking to prove is whether or not the temperature had a connection in the new strain’s ability to invade so effectively.
A lot of people know about West Nile Virus…The increase in its ability to spread should be a warning call to people about the threat of global warming. We’re told that global warming might melt the ice caps and that the water might rise. Okay, that’s sort of a bothersome image. But, because of global warming, we can suddenly see an increase in a disease. This has a direct connection to us. It’s not about fish this time…It’s about a disease that can kill humans. And, if the virus continues to spread and replicate as fast as it is, it could start to kill more people. Global warming is an issue…One that we, as a people, need to figure out a solution for.