...never thought to check but when I came to Canada had to have smallpox vaccination?? long time ago. but every time I went back to uk to see parents had to have the vaccinatin to get back into /Canada as did my two children one of whom was only 5 months old one time; and I often wonder if some of our later adult illnesses could have been cause by so many... I cannot recall exact details though and in those days no computers! And how many other "vaccines" have we had over the years....