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A change in the state's data format resulted in the tracker temporarily displaying the incorrect total number of tests value. The issue has been corrected.
The outbreak of coronavirus that has killed thousands around the world was confirmed to have arrived in Delaware in mid-March when a University of Delaware faculty member tested positive. Since then, the number of confirmed cases has increased daily.
Experts believe that the true number of cases is likely much higher than what has been confirmed. Testing is limited nationally, including in Delaware. Plus, not all those who contract coronavirus will experience symptoms, though they still could spread it to others.
The state's Division of Public Health releases updates on the number of cases, deaths, hospitalizations and recoveries throughout the day. Delaware Online is updating these numbers in real time as the state releases them.
The trend in Delaware over time
Delaware's first case was confirmed on March 11. The total number of cases grew slowly at first, but increases exponentially throughout April.
On March 26, the state announced its first coronavirus related death.
Daily confirmed cases and deaths
Infection numbers and deaths by county
At first, the overwhelming majority of cases in Delaware were in New Castle, the state's most populated county. But in mid-April, Sussex saw a dramatic increase in cases and ultimately outpaced the other counties, despite having just half the population of New Castle.
Rates are calculated using 2019 population estimates from the U.S. Census Bureau.