4 weeks after taking H1n1 vaccine I had a false positive hiv test.....i now know that the web site lists this as a side effect however i think this should be more publicized that it is now. i have retested every 6 weeks and have gotten negative results......but this vaccine has caused a headache and stress...imagine thinking you are going to die and wont be able to raise your kids. i would have never taken the vaccine or i would have know to wait to take an hiv test after taking the vaccine.