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Background. This study aimed to determine the knowledge, attitudes, and practices of Swiss business travelers with regard to influenza and the use of antiviral medication.

Methods. Questionnaires, available in three languages, were distributed manually and online through companies, organizations, and travel medicine specialists in Switzerland to business travelers who were traveling during the period January 2005 to April 2009.

Result. In total, 661 questionnaires were fully completed and evaluated. A total of 58.9% (n = 388) of the respondents stated that they had contracted influenza in the past; some 48.6% (n = 321) of the travelers had been vaccinated against seasonal influenza at least once in their lifetime; 87.1% (n = 576) of the travelers knew that influenza can be transmitted by droplets; and 62.3% (n = 412) were aware of transmission by direct contact. Almost all respondents (96.8%; n = 633) recognized fever as a main symptom of influenza, 80.0% (n = 523) knew about muscular aches and pain, 79.5% (n = 520) about shivering, and 72.9% (n = 477) about joint pain. Some 38.0% (n = 250) of the respondents stated that the annual vaccination is their preferred prevention method for influenza, 35.6% (n = 234) would neither do an annual vaccination nor carry antiviral medication, 16.0% (n = 105) would carry antiviral medication, 8.5% (n = 56) would prefer to do both the annual vaccination and to carry antivirals, and 2.0% (n = 13) would use antivirals as influenza prophylaxis. Regarding prevention, the majority (78.9%; n = 498) of the travelers did not seek advice on influenza before going on their last business trip, 58.0% (n = 381) did not take any preventive measures against influenza, 27.2% (n = 179) had their annual vaccination, and 15.7% (n = 103) observed hand hygiene. Of the travelers, 9.7% (n = 64) carried antiviral medication on their last business trip and 7.0% (n = 46) actually used this medication.

Conclusions. Business travelers have a good kowledge about the transmission and the symptoms of influenza but guidelines are needed that concisely address the indications for influenza vaccination in travelers and the carriage and use of antiviral medication.