There are statistics on COVID-19 being updated every day at the national, state, and local level.  But what does it all mean?  Hood River County Health Department Health Officer Dr. Christopher Van Tilburg says he follows the weekly number of new cases and the test positivity rate. But in a Facebook post he offers a word of caution, saying it doesn’t equal the prevalence of coronavirus in the community.  He says that’s because of a number of reasons including fluctuations in testing of asymptomatic people, false negatives, timing of getting test results back, and a lag in the compilation of local and state statistics.  Van Tilburg emphasizes statistics shouldn’t be used to guide behavior.