AIDS
Firws
Y_ffliw
Brech_wen
HIV
Brech_goch
Annwyd
Poliomyelitis
Brech_ieir
Yr_Eryr_(afiechyd)
Rwbela
Ffliw_adar
Clwy'r_pennau
Pandemig
Clwyf_y_traed_a’r_genau
Pandemig_ffliw_1918
Y_gynddaredd
Dolur_annwyd
Gastroenteritis
Clefyd_firaol_Ebola
Gwibgymalwst
Pandemig_ffliw_2009
Edward_Jenner
Y_Firws_Zika
Trosglwyddo_troseddol_HIV
Ffliw_moch
Hepatitis_B
Epidemig_y_firws_Zika
Norofeirws
COVID-19
Hepatitis_A
Pandemig_COVID-19
Cyffuriau_gwrthfiraol
Canser_serfigol
Max_Theiler
Parlys_Bell
Brechlyn
Haint_arbofirws
Coronafeirws_(grŵp_o_firysau)
SARS-CoV-2
Amantadin
Sidofwdin
Rosalind_Franklin
Y_Gofid_Mawr_(COVID-19)_yng_Nghymru
TRIM5
Mycsomatosis
Lamifwdin
Cyfnod_clo
Brech_y_mwnci
Bioderfysgaeth
Mary_Wortley_Montagu
Clefyd_y_tafod_glas
Tarddiant_y_frech_goch_yn_Abertawe,_2013
CXADR
IFIH1
BST2
Phyllis_Clinch
Amserlen_y_Gofid_Mawr_(COVID-19)_yng_Nghymru_(2021)
Amserlen_y_Gofid_Mawr_(COVID-19)_yng_Nghymru_(2019-2020)
Amserlen_y_Gofid_Mawr_(COVID-19)_yng_Nghymru