Dayton Communtiy Blood Center will screen for Zika

The FDA expanded screening to all US blood centers Friday

FILE - This Aug. 20, 2013 file photo shows blood donated in Indianapolis. On Friday, Aug. 26, 2016, the Food and Drug Administration recommended that all U.S. blood banks start screening for the Zika virus, a major expansion intended to protect the nation's blood supply from the mosquito-borne disease. (AP Photo/Michael Conroy)

WASHINGTON (AP/WDTN) — The Food and Drug Administration wants all U.S. blood centers to start screening for Zika, a major expansion intended to protect the nation’s blood supply from the mosquito-borne virus.

Friday’s advisory means all U.S. states and territories will need to begin testing blood donations for Zika. Previously, the FDA had limited the requirement to Puerto Rico and two Florida counties.

The Community Blood Center in Dayton said Friday they are already taking steps to comply with the recommendations. The FDA is recommending any state with even a single case of Zika should begin testing immediately. 11 southern states must begin testing as soon as they can but no later than September 23. All other states, including Ohio and Indiana, begin screening as soon as they can but no later than November 18.

“There is still much uncertainty regarding the nature and extent of Zika virus transmission,” said Dr. Peter Marks, director of the FDA’s biologic products center, in an agency release. “At this time, the recommendation for testing the entire blood supply will help ensure that safe blood is available for all individuals who might need transfusion.”

Blood collection sites already test donations for HIV, hepatitis, West Nile virus and other blood-borne viruses.

FDA officials said Zika testing is already underway in Puerto Rico and parts of Florida, where “it has shown to be beneficial in identifying donations infected with Zika virus.”

The FDA has authorized use of two experimental blood-screening tests for Zika, one made by Roche and another from Hologic Inc. Several testing sites are already voluntarily using the technology, including blood centers in Texas. The cost of adding Zika testing to the blood screening process is less than $10, according to officials at South Texas Blood and Tissue Center.

Since February, U.S. blood centers have been turning away people who have recently traveled to areas with Zika outbreaks, under a previous FDA directive.

Zika is spread primarily by mosquito bites, as well as sex. There have been cases of Zika transmission through blood transfusion in Brazil.

The FDA works with other federal agencies to set standards for screening, testing and handling blood donations.

Last month, blood centers in Miami and Fort Lauderdale had to halt donations until they could begin screening each unit of blood. The order followed now-confirmed reports of local Zika transmission in the Miami area — the first in the continental U.S.

Puerto Rico suspended blood donations and imported blood products in March until the island began screening its blood.

Friday’s announcement follows recent pressure from members of Congress urging the FDA to expand Zika screening.

“We must implement widespread universal screening now to prevent any further contamination of the blood supply before it occurs and to pre-empt a widespread shortfall in the blood supply,” stated Reps. Lloyd Doggett, D-Texas, Patrick Murphy, D-Fla. and a half-dozen other House members, in a letter to the FDA earlier this month.

The Zika virus causes only a mild illness in most people, but scientists have confirmed that infection during pregnancy can lead to severe brain-related birth defects.

The tropical mosquito that spreads Zika and other viruses is found in the southern U.S. While health officials have predicted that mosquitoes in the continental U.S. would begin spreading Zika this summer, they also have said they expect only isolated clusters of infections and not widespread outbreaks. So far, there have been about 40 cases of homegrown Zika in Florida.

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