Dr. Colm Henry:

To reiterate, there is no link between the rare venous clotting syndromes that have been reported. These vaccines are immune-mediated, and as such, and are not linked to this injection technique, which is intramuscular. As Dr. Jessop said, at this point we do not see any reason to change the advice and training we give to people on intramuscular injection, a procedure with which most healthcare professional are very familiar.