It took TSMC a little over two weeks to fully assess the consequences of the Fab 14B incident. Apparently, the chemical contamination was triggered by an abnormal reaction in the photoresistant material that lead to a polymer residue compromising up to 30,000 of 12 nm and 16 nm wafers. Total losses are estimated around US$550 million, but TSMC intends to ramp up production in Q2 to mitigate part of the losses.
https://www.notebookcheck.net/TSMC-reveals-details-on-Fab-14B-production-incident-estimates-considerable-losses.410530.0.html