US FDA has asked Miami-area blood banks to close until they can screen all blood supplies for the Zika virus in the wake of the first known cases transmitted by mosquitos within the US. A manufacturer of the only test currently available for blood-bank use does not expect shortages, despite the increased demand.

It was a quiet month for warning letters at the FDA last month, with the agency issuing no new warning letters and closing out only one. 

A proposed rule from the US Food and Drug Administration would allow the agency to take on regulation of lab-developed tests by phasing out the previous approach of enforcement discretion