Simple finger-prick blood test can identify people most at risk of being re-infected with Covid
![Simple finger-prick blood test can identify people most at risk of being re-infected with Covid](https://i2-prod.walesonline.co.uk/incoming/article25074627.ece/ALTERNATES/s615/0_Rapid-HIV-test.jpg)
The test was developed by a small biotech firm based in Cardiff in close collaboration with Cardiff University
The test was developed by a small biotech firm based in Cardiff in close collaboration with Cardiff University