The Health Department held a pandemic flu vaccination drill at Bunnell High School in Stratford Wednesday.

Hundreds of people and more than 20 agencies gathered in the high school gym to carry out the drill. The mock clinic put patients through the process of registering, getting medical clearance and getting their shot. The voluntary patients also upped the complexity of the drill by having special medical conditions and fears about getting vaccinated.

Officials say the purpose of the drill is to identify problems in a plan that has been years in the making.