"The RSV vaccine has the potential to save 1000 young children every year in Wales from hospitalisation and could save the lives of over 125 older people each year.
"Mae gan y brechlyn RSV y potensial i arbed 1000 o blant ifanc bob blwyddyn yng Nghymru rhag gorfod mynd i’r ysbyty a gallai achub bywydau mwy na 125 o bobl hŷn bob blwyddyn.