Table 2.

Knowledge of the influenza vaccine among employees of food production and operations in Guangzhou, July 20–31, 2015 (N = 1,035).

Knowledge	n	% (n/N*100%)	95% CI lower	95% CI upper
What population needs the influenza vaccine? (multiple choice)
Children (6 months to 5 years old)	918	88.70	86.77	90.62
Elderly people (>60 years)	382	36.91	33.97	39.85
Chronic disease patients	265	25.60	22.94	28.26
Medical staff	371	35.85	32.92	38.77
Those who work with baby and children	475	45.89	42.86	48.93
What seasons are recommended for influenza vaccination? (multiple choice)				0.34
January to March	263	25.41	22.76	28.06
April to June	331	31.98	29.14	34.82
July to September	258	24.93	22.29	27.56
October to December	161	15.56	13.35	17.76
Do not know	322	31.11	28.29	33.93
How necessary do you think vaccinating every year is?
Necessary	546	52.75	49.71	55.80
Not necessary	471	45.51	42.47	48.54