Florida Department of Health workers package up a urine sample to be tested for the Zika virus. (Photo by Joe Raedle/Getty Images)

Following a Zika test error that caused its lab to get 409 specimen samples retested, the D.C. Department of Forensic Sciences Public Health received seven more false negative outcomes since the two tests that officials announced last week.

Out of 207 results that have come back so far, one retested as 100 percent positive for Zika, and eight are positive for an unspecified flavivirus that could be either Zika or Dengue, but “for epidemiology sake they are considered Zika,” DFS Communications Director LaShon Beamon told DCist.

All nine positive results are from women who were pregnant when they first tested for Zika with D.C.’s forensics lab.

Last week, Dr. Anthony Tran, the new public health director at the laboratory, told reporters that he discovered the error with the lab’s Zika MAC-ELISA test on December 14. He described the mistake as a “technical formulation and calculation error.” After that, the lab immediately stopped administering it the test.

Following a review, lab officials sent the 409 specimen samples collected between July 14 and December 14, 2016 to the Center for Disease Control and Prevention and CDC-approved sites for retesting.

The samples included 294 from women who were pregnant when they took the test. Tran did not say if any of the pregnant women have since given birth, or if their babies have contracted microcephaly—a condition affiliated with the virus.

Of the retested samples that the department has received, 198 remained negative. And officials are still awaiting results from 202 more retests.

The forensic agency is responsible for Zika testing for patients seen by D.C. health care providers. Tran said last week that DFS will give all of the retested results to providers, who are responsible for relaying the information to their clients.