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Tuberculosis Prevalence Among US Crop-Workers, 2000 to 2012: Trends and Contributing Factors
Alvaro Medel-Herrero1, Beatriz Martínez-López, Noelia Silva-Del-Rio
1Center for Health and the Environment, University of California, Davis, California (Dr Medel-Herrero); Center for Animal Disease Modeling and Surveillance, Department of Medicine & Epidemiology, School of Veterinary Medicine, University of California, Davis, California (Dr Martínez-López); Veterinary Medicine Teaching and Research Center, Veterinary Medicine Extension, University of California, Davis, California (Dr Silva-del-Rio); Population Health & Reproduction, Veterinary Medicine Extension Veterinary Medicine Extension, University of California, Davis, California (Dr Pires); California Department of Food and Agriculture, Animal Health and Food Safety Services, Animal Health Branch, Sacramento, California (Dr Edmondson); Department of Public Health Sciences, University of California, Davis, California (Dr Schenker); Western Center for Agricultural Health and Safety, University of California, Davis, California (Dr Schenker).
Objective:
We intend to study tuberculosis (TB) in one of the poorest communities in the US, hired agriculture workers, for most recent years (2000 to 2012) including the last recession period.
Methods:
Time-chart, simple mean differences, and logistic regressions were used to describe TB-prevalence and risk factors among US crop-workers. Data were drawn from the National Agricultural Workers Survey (NAWS).
Results:
A high TB-prevalence was found among crop-workers with a dramatically increasing trend in recent years. Hispanic ethnicity, having farmworker family members, the presence of health insurance, and good spoken English were associated with an increased TB-prevalence.
Conclusion:
We found risk factors related to ethnicity and poor access to health care, a strong association between agriculture activity and TB, and an increase of TB-cases due to the 2008 downturn in this underserved population. We urge the health authorities to control this epidemic.
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