Vaccine-preventable diseases (VPDs) are diseases that are preventable through the use of immunizations. Immunizations are the most effective method for protecting the community against VPDs. However, these diseases still occur because of importation, vaccine failure or disease breakthrough, and incomplete or no vaccinations.
In 2018, hospitalized influenza was the most commonly reported VPD with 178 cases (65.7%), followed by pertussis with 37 cases (13.7%), chickenpox with 24 cases (8.9%), hepatitis B with 23 cases (8.5%), hepatitis A with six cases (2.2%), and mumps with three cases (1.1%).
Vaccine-Preventable Diseases, Davis County, 2018
The incidence of VPDs is highest among children and the elderly. Influenza especially affected the elderly population during the 2017-18 season.
Incidence of VPDs by Age Group, Davis County, 2018
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 2017-18 influenza season was no exception.
VPDs by Month Reported, Davis County, 2018