It includes hospital in-patients with a laboratory confirmed result and does not count any patients who were admitted and discharged on the same day.
Mae'n cynnwys cleifion mewnol mewn ysbytai sydd wedi cael cadarnhad o’u prawf drwy labordy ac nid yw'n cyfrif unrhyw gleifion a gafodd eu derbyn a'u rhyddhau yr un diwrnod.