The estimated age-group specific influenza vaccine coverage rates in Hong Kong and the impact of the school outreach vaccination program

Figures & data

Figure 1. The number of weekly influenza related hospital admissions over time in children aged under 6 years old in comparison to those aged 6 to 11 years old and their corresponding vaccination rates.

Table 1. Comparison of vaccination rates between the two survey years

	Influenza vaccination rate (2018/2019)	Influenza vaccination rate (2019/2020)	p-Value
Surveyed children from SOV schools (7–11 years old)	1572/2272 (69.2%)	1575/2266 (69.5%)	0.8428
Preschool (0–3 years old)	377/953 (40.0%)	79/215 (36.7%)	0.4921
Kindergarten (4–6 years old)	309/752 (41.1%)	250/413 (60.5%)	0.0001
Secondary School (12–17 years old)	133/612 (21.7%)	197/561 (35.1%)	0.0001
Adults (18- under 64)	712/5134 (13.9%)	511/4539 (11.3%)	0.0001
Senior Citizen (age 64 above)	329/752 (43.8%)	110/240 (45.8%)	0.6233

Table 2. Estimated vaccination rates according to survey results in comparison to CHP Government statistics

Age	Vaccination rate in 2020% (95% C.I.)	Vaccination rate as per CHP in 2020 (%)
0–5 years	48.5 (44.3–53.0)	47.4
6–11 years	69.30 (67.6–71.3)	68.1
12–17 years	32.9 (28.2–37.2)
18–19 years	6.2 (2.4–14.8)
20–29 years	3.6 (1.7–7.7)
30–39 years	8.1 (6.8–9.6)
40–49 years	13.1 (11.8–14.6)
50–64 years	14.3 (11.7–17.4)
65–89 years	45.7 (39.5–52.0)	45.8

CHP: Center for Health Protection.

C.I.: Confidence Interval.

Table

Family member	Has the family member received flu vaccination during the past year?		During the last month, has the below family member been sick with a fever of >38°C and cough?		Has the family member hospitalized during the past month? If yes, please write down the number of days he/ she have been hospitalized.
	Yes	No	Yes	No	Yes	No
The surveyed child	□	□	□	□	□:_____ day	□
Father Age: __________	□	□	□	□	□:_____ day	□
Mother Age: __________	□	□	□	□	□:_____ day	□
Bother/Sister (1) Age: __________	□	□	□	□	□:_____ day	□
Bother/Sister (2) Age: __________	□	□	□	□	□:_____ day	□
Bother/Sister (3) Age: __________	□	□	□	□	□:_____ day	□
Bother/Sister (4) Age: __________	□	□	□	□	□:_____ day	□
Other family member (1) Age: _____* Male /Female	□	□	□	□	□:_____ day	□
Other family member (2) Age: _____* Male /Female	□	□	□	□	□:_____ day	□
Other family member (3) Age: _____* Male /Female	□	□	□	□	□:_____ day	□
Other family member (4) Age: _____* Male /Female	□	□	□	□	□:_____ day	□

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