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Data & Statistics

County Vaccination Coverage

The County of San Diego Health and Human Services Agency's Immunization Branch conducts periodic Random Digit Dialing (RDD) telephone surveys. Interviewers make phone calls to randomly selected phone numbers to assess immunization coverage rates for San Diego County residents.

Surveys provide valuable data to determine what proportions of infants, children, adults and seniors living in San Diego County are fully immunized. The information collected helps us plan programs to do a better job of protecting all San Diegans from vaccine preventable diseases.

We measure our progress against the immunization component of the Healthy People objectives set by the federal Department of Health and Human Services. The objectives are science-based, 10-year national objectives for improving the health of all Americans. It is important to note that these goals are reviewed regularly and changed to reflect the latest immunization recommendations.

Vaccine Coverage Statistics: A Work in Progress

At the time of the last local survey (2013) we found that we had met and exceeded the 2010 goal of 80% of San Diego preschool children getting the following vaccines: four doses of DTaP (diphtheria, tetanus, and pertussis), three doses of polio, one dose of MMR (mumps, measles, and rubella), three doses of hepatitis B, three doses of Hib (Haemophilus influenzae B), and one dose of varicella (chickenpox).

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As noted earlier, the Healthy People goals are adjusted as immunization recommendations change, based on the latest science available. The latest revision one of the immunization goals adds another vaccine to be included in the coverage measurements. This vaccine, which protects against certain types of pneumococcal disease is recommended for children at 2, 4, 6, and 12-15 months of age. Since this is a new measurement, it will take a while before enough data on this vaccine is available to calculate a coverage rate. Then, that coverage rate can be included in the rates for other vaccines in order to determine progress towards the Healthy People 2020 objectives.

The County of San Diego Health and Human Services Agency’s Immunization Program continues to work with its community partners, both organizations and individuals, to improve immunization rates in the County. Staff and partners are always looking for new and innovative ways to increase the effectiveness of immunization promotion and education efforts. Those efforts never cease; every year there is always a new population of babies who need immunizations to protect them from serious, vaccine-preventable diseases.

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The coverage rates for each vaccine were analyzed separately. Some have reached or exceeded the Healthy People 2020 goal of 90%, such as for the dose of MMR (labeled MMR1). The vaccines protecting against hepatitis B (HepB3) and chickenpox (Varivax), started with low coverage, but have exceeded the 2020 goal. In 1995 the number of children receiving the fourth dose of DTP (DTP4) was far below the 2020 goal. In 2013 the number was markedly higher, but had not quite reached the 2020 goal.

Click on image to enlarge
click on image to enlarge

The following graphs display selected results of earlier surveys.

The percentage of San Diego County residents age 65 and over getting the flu and pneumococcal vaccines has been similar each year and is similar to State and national rates.

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click on image to enlarge

Everyone 6 months and older should get a flu vaccine each year starting with the 2010-2011 influenza season.  People in some age ranges, health conditions, or occupations had higher rates of receiving the flu vaccine than other groups

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click on image to enlarge

The coverage levels of HPV (human papillomavirus), MCV4 (meningococcal meningitis) and Hepatitis A vaccines increased significantly over the previous assessment year.

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click on image to enlarge


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