ADHS will be performing maintenance on the Medical Marijuana systems starting on Saturday, January 24, 2015 at 10 PM expected to be completed by Sunday, January 25, 2015 at 4 AM. During this time, Medical Marijuana Online Registry Applications will be unavailable. We apologize for the inconvenience this maintenance downtime may cause. If the process is completed earlier, the systems will be made available at an earlier time.

Arizona Immunization Program

Vaccine Preventable Diseases

Immunizations are one of the greatest public health achievements of the 20th century. Smallpox was eradicated. Many of the vaccine-preventable diseases listed below are hardly ever seen in the United States and the numbers of cases are decreasing around the world.

However, people who have never seen the ravages of these diseases may not understand how important it is to continue to be fully vaccinated. Many of these diseases are still circulating in the United States, and the rarely seen diseases are only an airplane ride away from anywhere in the world. Explore the links below to find out about these dangerous diseases, and why vaccines are so important to the health of individuals and our communities.