In particular, HCWs who work with the following cohorts should be offered an occupational pertussis vaccination, if they have not had one in the past five years:
Yn benodol, dylai HCWs sy'n gweithio gyda'r carfannau canlynol gael cynnig brechiad pertwsis galwedigaethol, os nad ydynt wedi cael un yn ystod y pum mlynedd diwethaf: