I don't think so, this would be exposing you to blood viruses such as HIV and stuff, but of course, this might be wrong. I still don't think that medical experts would even include a droplet of blood because this might start up complaints and they might get a chance of getting sued. Besides, the H1N1 vaccine is available to pregnant woman, and I don't think doctors would like any blood in H1N1 vaccine inserted into a pregnant woman because this might risk losing her baby.(I wrote this the same exact day I got the H1N1 nasal spray!)