The Centers for Disease Control and Prevention (CDC) has reported two new cases of the coronavirus that do not appear to be travel-related, bringing the total number of suspected cases with unknown origins to four.
One case was reported in Oregon and the other in Washington state, the CDC announced late Friday. The new untraceable cases follow California health officials on Friday reporting a second case of coronavirus in a person who had no previous connection to anyone with the disease.
The cases have raised concerns among health officials about so-called community spread, in which an illness spreads in communities despite the source of the infection being unknown. The first suspected case of community spread was announced in California on Wednesday.
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