The 10 states with the worst vaccination rates

Vaccines are essential to preventing disease outbreaks, but some states do better than others when it comes to immunizations. The personal-finance website WalletHub analyzed 18 metrics across all 50 states and the District of Columbia to find out which states were the best, and which states were the worst.Here are the 10 states with the worst vaccination rates, and their rankings in two of the key performance areas.