@michaelmina_lab Is the intradermal flu vax any more effective or is this just a comfort thing with a smaller needle?
@michaelmina_lab 皮内流感疫苗是否更有效，或者这只是用更小的针头带来的舒适感？
@michaelmina_lab Is the intradermal flu vax any more effective or is this just a comfort thing with a smaller needle?
@michaelmina_lab 皮内流感疫苗是否更有效，或者这只是用更小的针头带来的舒适感？