The data for code “I” (illness) does not include COVID-19 related illness from 22 November 2021 onwards and is not comparable to the data before this date.
Nid yw'r data ar gyfer cod “I” (salwch) yn cynnwys salwch cysylltiedig â COVID-19 o 22 Tachwedd 2021 ymlaen ac nid yw'n gymharol i'r data cyn y dyddiad hwn.