Changing Trends in Age and Sex Distributions of Lyme Disease-United States, 1992-2016

We examined trends in reported cases during a 25-year period to describe changes in the populations most affected by Lyme disease in the United States. We examined demographic characteristics of people with confirmed cases of Lyme disease reported to the Centers for Disease Control and Prevention during 1992-2016 through the National Notifiable Diseases Surveillance System. We grouped cases into 5-year periods (1992-1996, 1997-2001, 2002-2006, 2007-2011, 2012-2016). We calculated the average annual incidence by age and sex and used incidence rate ratios (IRRs) to describe changes in Lyme disease incidence by age and sex over time. We converted patient age at time of illness into patient birth year to ascertain disease patterns according to birth cohorts. The incidence of Lyme disease in the United States doubled from 1992-1996 to 2012-2016 (IRR = 1.74; 95% CI, 1.70-1.78) and increased disproportionately among males; IRRs were 39%-89% higher among males than among females for most age groups. During the study period, children aged 5-9 years were most frequently and consistently affected. In contrast, the average age of adults with Lyme disease increased over time; of all adults, people born during 1950-1964 were the most affected by Lyme disease. Our findings suggest that age-related behaviors and susceptibilities may drive infections among children, and the shifting peak among adults likely reflects a probability proportional to the relative size of the baby boom population. ...
Source: Public Health Reports - Category: International Medicine & Public Health Authors: Source Type: research

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Source: PLoS One - Category: Biomedical Science Authors: Source Type: research
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Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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Source: Radiologia - Category: Radiology Authors: Source Type: research
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Source: European Journal of Clinical Microbiology and Infectious Diseases - Category: Microbiology Source Type: research
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Source: BMC Infectious Diseases - Category: Infectious Diseases Authors: Tags: Research Source Type: research
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Source: Military Medicine - Category: International Medicine & Public Health Authors: Source Type: research
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Source: Nature AOP - Category: Research Source Type: research
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Source: Vector-Borne and Zoonotic Diseases - Category: Infectious Diseases Authors: Source Type: research
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