The Health Service Executive is urging parents to have their children immunised.
It's part of a campaign launched today to highlight the importance of vaccination as a means of saving lives.
The HSE National Immunisation Office says many people forget how serious certain diseases are because immunisation in recent years has lessened their prevalence and impact.
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The new campaign, which goes live today, includes television, radio and bus shelter ads.
Dr Brenda Corcoran is with the National Immunisation Office: