Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Timeline of COVID-19 RT-PCR results
| Specimen | Date | PCR result |
|---|---|---|
| Nasopharyngeal swab | 16 February 2020 | Positive |
| Nasopharyngeal swab | 23 February 2020 | Weakly positive |
| Nasopharyngeal swab | 1 March 2020 | Negative |
| Nasopharyngeal swab | 8 March 2020 | Negative |
| Nasopharyngeal swab | 22 March 2020 | Positive |
| Tracheal aspiration | 22 March 2020 | Positive |
| Cerebrospinal fluid | 22 March 2020 | Positive |
COVID-19, coronavirus disease 2019; RT-PCR = reverse transcriptase PCR.
