As a parent of a high-risk child (DS7 has asthma), I too wait and waited for vaccines to come to our area and wondered what was taking so long. Every day I was hearing about billions of doses of vaccine being sent out yet our area had none. Since I work for a fairly large and well-known healthcare organization I was able to ask a friend of mine, who is also our Government and Public Relations specialist for the organization, what was taking so long and why our clinics didn't have any vaccine yet?
The process she describled to be was that all the vaccine went to the feds -the feds then distribute to each state government. The states then distribute to each county. The County Health depts then decide what quanitity of the vaccine they want to use to distribute at public clinics, then decide how much goes to each city in their county. The portions that the cities get goes through the same process - some goes to publc clinics held by city health departments, some goes to the healthcare facilities in that city. By the time the vaccine reaches the healthcare clinics it's been weeks since they were distributed to the states. Like anything else that the government is involved in, it is a slow, tedious process.
We did evenuatlly get our vaccines, at public clinics (weeks sooner that we could have gotten them at our doctors offices), and my son still caught H1N1, although no one else in our family got it. He was very sick and was at the Peds office, the ER, and Children's Hospital all within 3 days. He got sick in October, right after the vaccination - no time for his to take effect either.