Double TB skin test... impotant make you go hmm question

So I was due for my annual TB testing and the hospital I am going to as a travel nurse requires a 2 step. So I had step 1 which disappeared almost immediately as usual. Today I got my 2nd done and its red, angry, sore. I know results aren't read for 48 hours. But I realized, they did it in the exact same spot as last week. Do you think placement in the same spot could cause a reaction?
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Where I work they require the 2 step process as well. Did you get the second one placed a week after the first one was read or a week after the first one was placed? I know that is how I send the new hires to immunizations here.