Can a flu vaccine affect the results of a rapid/quick test or a blood test? I ve been going over sexual history and trying to recall any instances of high-risk behavior....in the last yr there have been a few (4 or 5 seriously at best) instances of a condom breaking or realizing it was up inside of me the whole time after sex was over...some unprotected sex exposure was short (5 mins at best) and some we d been having sex for a while (close to 40-45mins). I went in early afternoon of nov 23rd and got 2 rapid tests RIGHT/minutes AFTER I d gotten a flu vaccine (on top of that i m still getting over the end of a bout with what a previous doc diagnosed as Acute Bronchitis if that matters) and both came back faintly positive. They were trying to convince me it doesn t mean I have it but at the same time they were backpeddling that in most cases it can mean that I actually do as in may have just gotten it. The doctor attending me said both times they were so faint she was sure it was negative (2 nurses were looking at the results with her)....one nurse didn t see anything on the first but the other did and vice versa on the 2nd. Can the flu vaccine i d just taken and recovering from acute bronchitis have created/influence the rapid results and can it affect the blood test they just sent out? Thanks. Cadence .