To enable enhanced monitoring of antibody levels and waning, an additional antibody series with a higher level of 800 ng/ml has been introduced.
Hefyd, er bod mwy o wasanaethau wedi ailddechrau, mae mesurau rheoli ac atal heintiau ychwanegol wedi’u rhoi ar waith sydd wedi effeithio ar faint o brofion diagnostig y gellir eu cyflawni.