Wednesday, April 7, 2010

Chicken pox, VZV and immunes systems

Well anyway, COULD CHICKEN POX KILL SOMEONE???

If you ask me, the answer, yes. It’s definitely a yes. But how is that possible? If you tell that to every single doctor in your neighbourhood and they’ll probably call you crazy. Let’s start from the main subject: Chicken pox. Chicken pox is a HIGHLY CONTAGEOUS illness caused by the varicella zoster virus (VZV). Note that it’s highly contagious. Therefore, almost every time you go near someone with chicken pox, you’ll get infected. But it’s a common knowledge that one doesn’t get chicken pox twice, so I guess you’ll be asking me: What nonsense are you talking about?

Well dear readers, we INDEED get infected by the VZV almost every time we go near someone with chicken pox. But the reason why we don’t get chicken pox? Easy: After the first time we get chicken pox, the lymphocytes in our body will form memory cells, which, when we get infected by the same virus again, will act very much quickly compared to the first time. Its’ reaction towards the VZV is so fast that all the VZV gets destroyed before you see tell-tale signs and symptoms. That is why you usually can’t get infected twice. Usually can’t? Yes indeed, usually can’t. Not always. Why? Pretty simple: It’s also the reason why chicken pox can be fatal.

Due to the efficiency of our immune system, the memory cells act so fast that it can deactivate the VZV before you body shows any signs of infection. So how do you get it for a second time? Think carefully, and you will come up with only 1 explanation: When your immune system is spoiled. Once your immune system stops functioning properly, you will start getting infected by even the weakest virus which usually gets destroyed by the lymphocytes in your body. So when will our immune system break down? Ask a normal person and he or she will tell you it’s when you are sick or have a fever (trust me, most people will say that, including an ex-classmate who scored A1 in the biology in the SPM). The actual answer is when you get Acute Immuno Deficiency Syndrome (AIDS), of course. It’s pretty complicated to explain how the HIV virus deactivates your T-lymphocytes here, because I doubt most of the readers of this blog (if there are any) would know what I’m talking about, except for Katherine probably (I think she might be studying medicine, but she might not be following my blog anymore because I cuss at KC in a comment lol). So if the VZV enters your body when your immune system is down, you’ll get chicken pox again, which can lead to things like pneumonia if the virus isn’t dealt with. Ta Da… Impressive nonsense isn’t it? But honestly, if you have AIDS, I doubt you’ll die of chicken pox (or worrying about dying of chicken pox) anyway so everything I said is probably useless and unnecessary >.<

Mind if anyone blast me for being misguided or verify my statements?

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