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2003 APR 2 - (NewsRx.com & NewsRx.net) -- Patients who received influenza and pneumococcal vaccinations in Sweden were more likely to have chronic lung and heart conditions than those who were unvaccinated.
"This study characterizes possible confounders that might make cohorts vaccinated and unvaccinated against influenza and pneumococcal infection different at baseline, with the hypothesis that the two cohorts are comparable. The similarity between health and demographic data was analyzed by a randomized, multivariate study addressed to 10,000 persons aged 65 years and older in Stockholm County and was carried out in the form of a postal inquiry during the period December 2000 to May 2001," researchers in Sweden report.
"The study-population response rate was 78%," said B. Christenson and P. Lundbergh at Karolinska Hospital in Stockholm. "Of these, 66% (5,120 persons) had been given at least one influenza vaccination during the 3-year study period (1998-2000), 50% (3780) had received one pneumococcal vaccination, and 78% had received both vaccines during the period. The vaccination rate was lower in the age group 65-69 years (60%), compared with elderly cohorts aged over 70 years (67-72%, p
The investigators found, "Persons with underlying chronic diseases had higher vaccination rates (71%, p
The researchers concluded that "the influenza and pneumococcal-vaccine recipients were older and had significantly more chronic lung and heart conditions than the unvaccinated ...
Source: HighBeam Research, Influenza vaccine recipients more likely to have heart and lung...