Alliance for Pandemic Preparedness

March 11, 2021

COVID-19 Case Investigation and Contact Tracing in Central Washington State, June–July 2020

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  • 68% of individuals contacted by public health departments reported having “no close contacts” (with anyone), according to an evaluation of case investigations and contact tracing (CICT) in 3 health districts in central Washington State. The study included the results of interviews with individuals with COVID-19 (n = 3,572). A total of 968 individuals with COVID-19 named specific contacts (27% of all COVID-19 cases interviewed), naming a total of 2,293 contacts, corresponding to a mean of 2.4 contacts per individual with COVID-19. There was no difference in reporting of contacts by ethnicity, and minimal differences by age group, sex, and employment status.

Miller et al. (Mar 10, 2021). COVID-19 Case Investigation and Contact Tracing in Central Washington State, June–July 2020. Journal of Community Health. https://doi.org/10.1007/s10900-021-00974-5