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amcangyfrifir bod mwy na 4 ,800 o bobl drwy'r du wedi eu heintio â'r firws hepatitis c drwy ddefnyddio tewychwyr ceulo gwaed heintiedig a roddwyd fel rhan o'u triniaeth nhs
throughout the uk , more than 4 ,800 people with haemophilia are estimated to have been infected with the hepatitis c virus through the use of contaminated blood clotting concentrates given as part of their nhs treatment
mae hynny'n frawychus , am fod cynhyrchwyr paill yn wynebu problemau eisoes , er enghraifft gyda had rêp , sy'n ceulo'r paill ac sy'n cael effaith sylweddol ar y broses gynhyrchu
that is frightening , because pollen producers already encounter problems , for example with rape seed , which congeals the pollen and has a considerable effect on production