A long-term care facility in Dover reported 21 positive cases of COVID-19 after a single round of testing, the facility announced Thursday.

Riverside Rest Home in Dover conducted the tests on December 3 and 4, according to the announcement, and received the final results on Wednesday. Those results showed 18 residents and three employees that had tested positive for COVID-19.

The facility said all persons who tested positive had negligible to moderate symptoms as of Thursday.

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Prior to receiving the test results, seven employees developed symptoms consistent with COVID-19, per the announcement. Those individuals were instructed to stay out of work and and proceed with further testing. The facility said these individuals tested negative in the in-house testing but have all since tested positive and are reporting mild to moderate symptoms.

"This round of testing has demonstrated one day you may be negative and the following you could become positive," Director of Resident Services Brianna Haskins-Belanger said in the announcement. "It is very important, for everyone, to be mindful of how they are feeling and to report symptoms."

The facility said it plans to conduct another round of testing Thursday and Friday with results expected within 5-7 days.

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