Vaccine-preventable diseases (VPDs) are diseases that are preventable through the use of immunizations. Immunizations are the most effective step in protecting the community against VPDs. However, these diseases still occur because of importation, vaccine failure or disease breakthrough, and incomplete or no vaccinations.
In 2017, hospitalized influenza was the most commonly reported VPD with 122 cases (54.2%), followed by pertussis with 37 cases (16.4%), hepatitis B with 34 cases (15.1%), chickenpox with 26 cases (11.6%), hepatitis A with four cases (1.8%), and mumps with two cases (<1%).
Vaccine-Preventable Diseases, Davis County, 2017
The incidence of VPDs is highest among children and the elderly. Influenza especially affected the elderly population this season.
Incidence of VPDs by Age Group, Davis County, 2017
Vaccine-preventable diseases (particularly pertussis and chickenpox) are usually reported more frequently during the school year. Influenza season typically begins in December and peaks during January or February. The 2016-17 influenza season no exception.
VPDs by Month Reported, Davis County, 2017