Once the vaccine is ready (about 12 months), you may receive up to 3 vaccines, given one month apart. The vaccine will be given using a needle free injection device that works by delivering the vaccine through your skin. Each dose of vaccine will be split between 5 separate injections. You will no longer be able to take the vaccine if the disease gets worse or intolerable side effects occur. Your participation on this study will be complete 1 year after your last vaccination.