As long COVID is a new condition, when we first started to see patients with these symptoms we did not have all of the referral mechanisms and services in place to support them.
Gan fod COVID hir yn gyflwr newydd, pan ddechreuwyd gweld cleifion â'r symptomau hyn am y tro cyntaf nid oedd gennym yr holl wasanaethau a systemau atgyfeirio yn eu lle i'w helpu.