Medical Xpress July 21, 2022
Texas Biomedical Research Institute

As part of ongoing efforts to make a live attenuated vaccine for COVID-19, Texas Biomedical Research Institute Professor Luis Martinez-Sobrido and his team developed a weakened, or attenuated, version of SARS-CoV-2 that does not cause illness nor death. Texas Biomed has now received approval from the National Institutes of Health Office of Science Policy (NIH-OSP) to work with the attenuated virus in its biosafety level (BSL-2) laboratories. Previously, SARS-CoV-2 could only be safely studied in a biosafety level 3 (BSL-3) laboratory, which is much more restrictive, requires more personal protective equipment, and extensive training.

Biosafety levels are ranked 1 to 4, with one being the lowest and 4 being the highest. The levels define the required safety equipment and protocols...

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