It has long been assumed by medical experts that the United States is drastically underreporting the actual number of COVID-19 infections across the country due to limited testing and a high number of asymptomatic cases. Large-scale antibody tests are expected to give researchers an idea of just how widespread the outbreak is, and preliminary results from the first such test in Santa Clara County suggest we are underreporting cases by at least a factor of 50. In early April, Stanford University researchers conducted an antibody test of 3,300 residents in the county. Researchers hoped to put together a sample that was representative of the county's population by selecting individuals based on their age, race, gender and zip code to extrapolate study results to the larger community. The results of the study are preliminary and not peer-reviewed, but the general takeaways would seem to strongly contribute to the notion that there have been a large number of COVID-19 cases that went undetected. Researchers estimate that... the true number of total cases in early April - both active and recovered - ranges between 48,000 and 81,000. The county had reported just under 1,000 cases at the time the study was conducted, which would mean cases are being underreported by a factor of 50 to 85. If the study's numbers are accurate, the true mortality and hospitalization rates of COVID-19 are both substantially lower than current estimates, and due to lag between infection and death, researchers project a true mortality rate between .12 and .20.