It's not really that dramatic, but Mei is taking part in a clinic trial of a new vaccine that will, if it is approved, allow babies like herself to have a whole two less shots in the future. We were asked to participate, and being a researcher myself and a bit sympathetic, I thought we'll give it a shot, especially because the risks are not any different than any other vaccine. Instead of giving two immunizations seperately, but at the same time, they are combining them.
Anyway, it went well. She didn't explode or anything.