The Health Board will need to collect some clinical information about you, if they do not already hold it, such as whether you have had a flu vaccination or whether you have any allergies.
Bydd angen i'r Bwrdd Iechyd gasglu rhywfaint o wybodaeth glinigol amdanoch chi, os nad ydynt eisoes yn meddu arni, megis a ydych wedi cael brechiad rhag y ffliw neu a oes gennych unrhyw alergeddau.