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Volume 19, Number 10—October 2013

Dispatch

Declining Influenza Vaccination Coverage among Nurses, Hong Kong, 2006–2012

Shui Shan LeeComments to Author , Ngai Sze Wong, and Sing Lee
Author affiliations: The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China

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Table 2

Influenza vaccination rates and characteristics of nurses, Hong Kong

2005 2006 2007* 2008 2009† 2010 2011 2012*
Total sample size 903 739 739 779 477 477 651 639
Winter influenza season Mar–Jul Feb–Apr Feb–May Feb–Mar Jan–Mar Mar–-May Jan–Mar Jan-Mar
Predominant influenza virus strain A(H3N2) A(H1N1) A(H3N2) A(H1N1) A(H1N1) B A(H1N1)2009 B
Overall vaccination rate, % (95% CI) 56.8 (53.6–60.0) 46.0 (42.4–49.6) 41 (37.6–44.7) 39.8 (36.3–43.2) 39.8 (35.4–44.2) 26.6 (22.6–30.6) 24.7 (21.4–28.1) 24.4 (21.1–27.8)
Vaccination rate by subgroup
Sex, no. (%)
M 106 (58) 104 (44) 104 (42) 111 (44) 84 (39) 84 (33) 98 (31) 95 (29)
F 797 (57) 635 (46) 635 (41) 668 (39) 393 (40) 393 (25) 553 (24) 544 (24)
Age, y, no. ( %)
≤35 225 (52) 104 (38) 104 (30) 85 (44) 22 (36) 22 (23) 88 (15) 86 (16)
36–45 422 (59) 363 (45) 363 (40) 318 (36) 138 (32) 138 (28) 159 (25) 155 (26)
>45 256 (57) 272 (50) 272 (47) 376 (42) 317 (44) 317 (26) 404 (27) 398 (25)
Professional rank, no. (%)
Registered nurse§ 670 (57) 558 (46) 558 (41) 636 (40) 397 (40) 397 (27) 537 (24) 527 (24)
Enrolled nurse# 203 (55) 163 (44) 163 (39) 124 (41) 77 (38) 77 (22) 96 (27) 94 (24)
Working experience, no. (%)
<10 y 146 (51) 57 (42) 57 (35) 71 (44) 21 (33) 21 (19) 80 (14) 78 (10)
11–20 y 373 (58) 275 (40) 27 (35) 240 (37) 103 (30) 103 (22) 151 (22) 147 (23)
>20 y 356 (59) 385 (51) 385 (46) 452 (41) 353 (43) 353 (28) 416 (28) 410 (28)
Patient contact, no. (%)
Always 679 (54) 546 (42) 546 (37) 521 (39) 311 (37) 311 (26) 447 (23) 442 (23)
Sometimes 79 (59) 62 (60) 62 (50) 76 (37) 41 (44) 41 (34) 64 (33) 62 (27)
Seldom 79 (68) 71 (55) 71 (55) 83 (49) 50 (44) 50 (24) 51 (39) 47 (45)
Never 59 (66) 57 (53) 57 (49) 93 (40) 7 (46) 72 (26) 87 (17) 86 (17)

*Planned vaccination as indicated by nurses in the preceding year.
†Vaccination history based on nurses’ recall the following year.
Winter and summer seasons merged, giving an extended period of influenza activities.
§Completed 3 yr of training in a recognized school and holds a degree/diploma in nursing or equivalent.
#Completed 2 yr of training in a recognized training school under a hospital-based program.

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