Gall profion fod yn brofiad annifyr i’r plentyn, gall fod yn anodd cael sampl briodol ac, wrth gwrs, mae plant o’r oed hwn yn llawer llai tebygol o drosglwyddo’r feirws i eraill.
Testing can be distressing for the child, it can be difficult to obtain an appropriate sample and of course children of this age are much less likely to pass on the virus to others.