FILE - Coronavirus Outbreak i

This undated electron microscope image made available by the U.S. National Institutes of Health in February 2020 shows the Novel Coronavirus SARS-CoV-2, orange, emerging from the surface of cells, green, cultured in the lab. Also known as 2019-nCoV, the virus causes COVID-19.

Another increase Sunday in the number of positive cases of coronavirus in Delaware, while deaths are up slightly.

The state Division of Public Health reported 170 more positive cases, bringing that total to 6,447. Sussex County continues to have the most cases with 3,059, while Kent County has crossed the 1,000-mark - now at 1,016. New Castle County has 2331 cases.

With hospitalizations falling slightly, the number of "active" cases stands at 3,686 - still at its highest level. Fifty-three were listed as "critically ill" -- that's down two from the day prior.

The number of people who have recovered from COVID-19 is up 87 persons--half the amount of day prior-- for a total of 2,537.

There are now 224 deaths, up three from Saturday's total. The day after Delaware saw its youngest death from COVID-19 in a 22-year-old with underlying health conditions, Sunday's deaths involved three women with underlying health conditions ranging in age from 86 to 100.  Two of the women were New Castle County residents while one was from Sussex County.  Two of the three deaths were in long-term care residents. More than 65% of Delaware's fatalities have been residents of long-term care facilities.

The number of people who've tested negative is up significantly, to 24,592.

Increased testing will continue to lead to an increase in cases as Delaware examines other metrics like hospitalizations and percent of positive cases to determine conditions on the ground with the goal of reopening the economy. 

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WDEL's Amy Cherry contributed to this reporting.