I may be wrong, but, by definition, a "shortage" or "deficit" of a product is a situation when demand is higher than supply and the product must be rationed. So, no matter how you look at it, there is a shortage of available vaccine (or a shortage of a qualified personnel who can deliver it) since people who got their first does 2 month ago are still not able to receive there second dosed and need to wait for a month. Question: should the government do something about it to secure enough vaccine or speed up its delivery (in U.S. and most European countries people who want to get fully vaccinated do not need to wait till August). IMHO, the current timeline is not acceptable for a developed country.