O heddiw, bydd y GIG ledled y DU yn ysgrifennu at gleifion sydd wedi cael rhai mathau o lawdriniaeth agored ar y galon. Mae’n gwneud hyn i roi gwybod iddynt fod yna risg isel iawn y gallent fod wedi dal haint a achosir gan Mycobacterium chimaera.  Ni chysylltir ond â’r cleifion hynny sydd wedi cael llawdriniaeth ar y galon i amnewid neu atgyweirio falf y galon, gan gynnwys  triniaethau fel rhan o lawdriniaeth ar gyfer clefyd cynhenid y galon, a hynny ers mis Ionawr 2013. Mae’r risg o ddal yr haint hwn i gleifion sydd wedi cael mathau eraill o lawdriniaeth ar y galon yn isel iawn, ac ni  fydd yn cymryd camau i gysylltu â’r cleifion hyn.
The NHS across the UK is writing to patients who have had certain types of open heart surgery.  This is to inform them that they have a very low risk of having contracted an infection caused by Mycobacterium chimaera.  Only those patients who have had heart valve replacement or valve repair surgery, including procedures as part of congenital heart disease surgery since January 2013 are being contacted.  Patients who have had other types of open heart surgery have a very minimal risk of contracting this infection are not being proactively contacted.