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This guide will help you in case there is nuclear warfare and everyone turns into a zombie. I caution you that this information might not help because I have not in fact seen an actual zombie.
Step 1People
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The first step to survive a zombie attack is to have people with you. This is in my opinion is the number one way to survive. What about weapons and food you say, well calm down and let me explain. Say all you had were people and a zombie starts running at you. What do you do? You push a fellow survivor down so the zombie stops to take care of him and you and your group run to safety. You may think this is mean, but think of it this way. It's either you or him.
His face was protected by a face shield, something you'd see surgeons using to avoid blood spatter. Nonetheless, a [german] gas mask is the way to go if you want full head protection, only downsides are: optical field of view is very ristricted, and hearing is impaired. Also, you have to yell for anyone else wearing a gasmask to even notice you are speaking. This can be overcome with two way communication radios with mic and speaker in you mask.
http://www.instructables.com/id/DIY-Gas-Mask/
This is not my instructable but, seems like it would help. Also, I plan to head to Home Depot, the one near my house has is a fortress with steel roll-up doors and enough equipment to build anything you need plus a huge plant area with a like 15ft fence, potting soil and, seeds for the long term hold out. I could put expanded steal sheeting around the drivers compartment on the fork lift, and make forays out to pick up other supplies from the surrounding stores. As far as weapons, there will be plenty after the initial event from people who didn't fair as well.
EATEN ALIVE?!!!!!!!!
THE PLACES YOU JUST LISTED ARE THE ABSOLUTE LAST PLACES YOU SHOULD GO TO!!!!!!
not trying to be mean or anything, just they are REALLY BAD places to go to because they are first stops for zombies....
if we survive 2012
so I would suggest you want damage to zombies go shotgun.....
even the CDC (Centers for Disease Control) in the US are on board with this
http://www.bt.cdc.gov/socialmedia/zombies_blog.asp
But seriously do you know how many specifically coordinated nerve impulses it takes to just walk? I wouldn't be that worried.
A chainsaw is light?
No, a chainsaw isn't light. It's also noisy and fuel consuming. I'd go with a machete, sabre or a kukri. It's rather short but you can cut the zombie in half with it.
Also if a mosquito bit an infected not to sure (OFF or Raid) would work to well....
Just a thought.
If you've ever played Dead Frontier(one of my favorite games) you know that the N-3(Nerotonin-3) was supposed to be a cancer curing virus, but then it mutated into the N-4 and caused the zombie outbreak.
I don't completely understand your second questions, do you mean what would happen if a mosquito would bite an infected and then a human being?
First off I highly doubt the mosquito can be infected if that's what you mean as the virus will have to mutate in order to accomplish that.
If the zombies are UNDEAD, which means they died and revived, it means they are cold and don't breath(mosquitoes are attracted by carbon dioxide and heat) the mosquito won't even think of biting them.
If the infected are alive, however(like in 28 Days Later), the mosquito will carry infected blood and thus infect all the other people it bites.
oh and by the way superb innstructable i needed some zombie action oh and if you play any zombie games like on black ops or world at war you should check out my instructable although it occurs to me that i dont know what its listed under ah well:)