Coverage and Influencing factors of Influenza Vaccination among the
elderly in Minhang District, Shanghai
Abstract
Objectives: To describe the influenza vaccination coverage and identify
its influencing factors, and understand the reasons for not receiving
influenza vaccination among the elderly in Minhang District, Shanghai.
Methods: The influenza vaccination coverage among the elderly in Minhang
District of Shanghai was described by collating the data of influenza
vaccination from August 1, 2014 to July 31, 2019 for elderly people aged
≥60 years provided by Minhang District Center for Disease Control and
Prevention (CDC).And a telephone survey was conducted among vaccinated
and unvaccinated older adults during the 2018-2019 influenza season
using a self-designed questionnaire in August-December 2020. Results:
Influenza vaccination coverage rate among the elderly was 0.68%,
0.62%, 0.67%, 0.92% and 1.36% in the influenza season from 2014/2015
to 2018/2019 respectively. Higher influenza vaccination was associated
with females (odds ratio (OR):1.937), independent living (OR:8.700),
self-perceived poor health status (OR:4.445), having recommendations
from physicians (OR:5.052) or family members (OR:3.449), former smokers
(OR:4.509), past pneumococcal vaccination (OR:52.172) and past influenza
infection (OR:15.184). In addition, the elderly with chronic bronchitis
(OR:1.808), COPD (OR:3.161), bronchiectasis (OR:5.146) and diabetes
mellitus (OR:2.030) were positively associated with vaccination. The
main reason for not receiving influenza vaccination were believing they
were healthy and did not need to get vaccinated (40.0%). Conclusions:
The influenza vaccination coverage rate was relatively low among the
elderly in Minhang District, Shanghai. The awareness and willing about
vaccinations in elderly people should be increased.