Spatio-temporal pattern of viral meningitis in Michigan, 1993-2001

To characterize Michigan’s high viral meningitis incidence rates, 8,803 cases from 1993–2001 were analyzed for standard epidemiological indices, geographic distribution, and spatio-temporal clusters. Blacks and infants were found to be high-risk groups. Annual seasonality and interannual variability in epidemic magnitude were apparent. Cases were concentrated in southern Michigan, and cumulative incidence was correlated with population density at the county level (r=0.45, p<0.001). Kulldorff’s Scan test identified the occurrence of spatio-temporal clusters in Lower Michigan during July–October 1998 and 2001 (p=0.01). More extensive data on cases, laboratory isolates, sociodemographics, and environmental exposures should improve detection and enhance the effectiveness of a Space-Time Information System aimed at prevention.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/47932/1/10109_2005_Article_151.pd

Lymphocytic Choriomeningitis in Michigan

We summarize the first reported case of acquired lymphocytic choriomeningitis virus (LCMV) infection in Michigan to be investigated by public health authorities and provide evidence of the focal nature of LCMV infection in domestic rodents. Results of serologic and virologic testing in rodents contrasted, and negative serologic test results should be confirmed by tissue testing

Human Mycobacterium bovis Infection and Bovine Tuberculosis Outbreak, Michigan, 1994–2007

Mycobacterium bovis is endemic in Michigan’s white-tailed deer and has been circulating since 1994. The strain circulating in deer has remained genotypically consistent and was recently detected in 2 humans. We summarize the investigation of these cases and confirm that recreational exposure to deer is a risk for infection in humans

Evaluation of Legionellosis Surveillance in Michigan Focusing on Diagnostic Testing

In Michigan, legionellosis cases are reportable through the Michigan Disease Surveillance System (MDSS), a web-based database. The objectives of this study were to evaluate Michigan's legionellosis surveillance system and determine whether diagnostic methods influenced case distribution. Michigan's legionellosis surveillance system was evaluated using the 2001 MMWR surveillance system evaluation guidelines focusing on data quality, timeliness, and sensitivity. Additional analyses were performed on the diagnostic test data. The system showed moderate sensitivity, and reporting times over the 24-hour state requirements. Data completeness improved 20% over time. Decreasing culture diagnoses make linking cases to environmental sources in an outbreak investigation challenging

One Health in Action: Lyme Disease

The response to public concern of an increase in tick populations and Lyme disease prompted by a local veterinarian on a Lake Michigan island is a prime example of the One Health approach. Due to an increase in Lyme disease diagnosis in pets, the Michigan Department of Health and Human Services were invited to the island to conduct an environmental investigation and provide health education to local residents

One Health in Action: Lyme Disease

The response to public concern of an increase in tick populations and Lyme disease prompted by a local veterinarian on a Lake Michigan island is a prime example of the One Health approach. Due to an increase in Lyme disease diagnosis in pets, the Michigan Department of Health and Human Services were invited to the island to conduct an environmental investigation and provide health education to local residents

Evaluation of Legionellosis Surveillance in Michigan Focusing on Diagnostic Testing

In Michigan, legionellosis cases are reportable through the Michigan Disease Surveillance System (MDSS), a web-based database. The objectives of this study were to evaluate Michigan's legionellosis surveillance system and determine whether diagnostic methods influenced case distribution. Michigan's legionellosis surveillance system was evaluated using the 2001 MMWR surveillance system evaluation guidelines focusing on data quality, timeliness, and sensitivity. Additional analyses were performed on the diagnostic test data. The system showed moderate sensitivity, and reporting times over the 24-hour state requirements. Data completeness improved 20% over time. Decreasing culture diagnoses make linking cases to environmental sources in an outbreak investigation challenging

Evaluation of the Michigan Disease Surveillance System for Histoplasmosis Reporting

The histoplasmosis surveillance system was evaluated using the 2001Centers for Disease Control and Prevention Updated Guidelines for Evaluating Public Health Surveillance Systems. From 2004 to 2014, a total of 1,608 confirmed or probable cases were reported into MDSS, with a slight increasing trend in case numbers over time. Michigan’s histoplasmosis surveillance system is relatively simple, but the misclassification of cases is troublesome. Development of tools for LHDs to aid in classification of cases may improve the PPV and decrease case investigation time. Increasing the number of hospitals that report directly to MDSS would indicate more acceptability, and increase sensitivity

Evaluation of the Michigan Disease Surveillance System for Histoplasmosis Reporting

The histoplasmosis surveillance system was evaluated using the 2001Centers for Disease Control and Prevention Updated Guidelines for Evaluating Public Health Surveillance Systems. From 2004 to 2014, a total of 1,608 confirmed or probable cases were reported into MDSS, with a slight increasing trend in case numbers over time. Michigan’s histoplasmosis surveillance system is relatively simple, but the misclassification of cases is troublesome. Development of tools for LHDs to aid in classification of cases may improve the PPV and decrease case investigation time. Increasing the number of hospitals that report directly to MDSS would indicate more acceptability, and increase sensitivity