Positive results may be due to past or present infection with non-SARS-CoV-2 coronavirus strains, such as coronavirus HKU1, NL63, OC43, or 229E.
Nsonaazụ dị mma nwere ike ịbụ n'ihi ọrịa gara aga ma ọ bụ nke ugbu a na nsogbu ndị na-abụghị SARS-CoV-2 coronavirus, dị ka coronavirus HKU1, NL63, OC43, ma ọ bụ 229E.