Cyn gynted ag y darganfuwyd y broblem, rhoddwyd gwybod i bob labordy microbioleg a chanolfan brofi yng Nghymru fel y gellid tynnu’r swabiau yr effeithiwyd arnynt o’r system.
As soon as this problem was discovered, all microbiology labs and testing centres in Wales were notified so that the affected swabs could be taken out of circulation.