Second, although the timing of influenza activity may vary from year to year by several weeks, influenza outbreaks occur periodically every winter (figure 2). specific time lags is related to the incidence of influenza, Granger causality was also tested. == Results == Of the 16 models including number of newspaper articles with different time lags between 2 and 17 weeks (xt-2 to t-17), the coefficients of number of newspaper articles at time lags between t-5 and t-13 were significant. However , the coefficients of number of newspaper articles that are significant with respect to the Granger causality tests (p <0. 05) were the weekly number of newspaper articles at time lags between t-6 and t-10 (time shift of 10 weeks, =0. 301, p <0. 01; time shift of 9 weeks, =0. 200, p <0. 01; time shift of 8 weeks, =0. 156, p <0. 01; time shift of 7 weeks, =0. 122, p <0. 05; time shift of 6 weeks, =0. 113, p <0. 05). == Conclusions == We found that the number of newspaper articles reporting on influenza in a week was related to the incidence of influenza 610 weeks after press coverage in a large city in Japan. Keywords: EPIDEMIOLOGY == Strengths and limitations Flupirtine maleate of this study. == This is the first study to quantify the relationship between press attention and the incidence of influenza in a large city. Although pertinent information related to influenza might have been broadcast through other press except for newspaper, these effects were not evaluated. We need to be careful when generalising our results to other cities with the same population size in industrialised countries. == Introduction == During annual influenza epidemics, approximately 515% of the populace is affected by upper respiratory tract infections. 1Accordingly, influenza is a serious health threat and a significant cause of mortality in elderly people in industrialised countries. 26Vaccination has been shown to be a preventive measure for influenza; vaccines that contains antigens that match the predominant circulating strains have been reported to prevent illness in 7090% of healthy adult volunteers. 125Approximately 50 countries have government-funded national influenza immunisation programmes, and the influenza vaccine is available in many other countries as well. 1 According to the Elaboration Likelihood Model (ELM) of Pettyet al7people are most likely to pay careful attention to information when it is relevant to them and when it can be processed without assistance. Concomitant with this theoretical expectation, it has been reported that media activities can directly affect immunisation take-up, positively and negatively. 8A recent Cochrane review also concluded that mass media should be considered as a tool intended for encouraging the use of effective health services and discouraging the use of those of unproven effectiveness. 9Specifically, media reports have affected the vaccination rates intended for measles, mumps and rubella, 10whooping cough, 1113rotavirus8and influenza. 1415Specifically, Maet al14reported that the paediatric influenza vaccination rates from 2003 to 2004 were similar to those from 2002 to 2003 until the onset of intense media coverage, at which time the number of influenza vaccinations per week increased more than threefold. According to a study whose participants were community-dwelling elderly people in the USA insured through Medicare, press reports in television and Flupirtine maleate newspapers were associated with earlier and increased influenza vaccination, shifting the mean vaccination timing earlier by 1 . 84. 1 days (p <0. 01) or increasing the annual vaccination rate by 2 . 33. 7% (p <0. 01). 15 With respect to press coverage and influenza, previous findings can be summarised as follows: (1) press coverage is focused on a specific high-risk group such as children or senior citizens; (2) Rabbit Polyclonal to OR10Z1 the outcome measure intended for the effectiveness of press coverage is influenza vaccination, not the number of cases of influenza. As for these points, however , in view of ELM and previous findings, 791415it is possible that influenza-related press reports might be related to the incidence of influenza cases. To date, however , the relationship between press attention and the incidence of influenza in a large city has not been evaluated. We obtained information regarding influenza from various press sources including TV, radio, internet and magazines. Among the various types of mass media available, information Flupirtine maleate in the newspapers is coming to the Flupirtine maleate readers, whereas in the internet people.