Rred
Contributor
I haven't seen an insert from the box--that stops in the "medic's" hands. I did see some reference from the CDC that a second dose in "two to six" months is suggested for people over age 50 in the US. I'll have to look at that further on the CDC web site. (Sometimes the Canadians know better, but here in the US, the pharmacy and the insurer and everyone else will want to follow CDC guidelines.)