COVID-19 infectivity

Understanding the interactions of infectivity and susceptibility lies at the heart of understanding how COVID-19 spreads through our society and may be a key to safely returning to social mingling.
There is typically nothing useful or entertaining about epidemiological studies. Not this time.
The study comes from Taiwan, the country with the ambiguous “ownership.” The study is small, only 100 patients, but think of it as the pilot, not the definitive report – there is always something to learn.
Stanford researchers tested 3330 people in one county in California, Santa Clara, that at the time of testing had the largest number of confirmed cases in the state.