Knowsley Council's Public Health Team is urging residents to check they are up-to-date with their vaccines during World Immunisation Week from 24 to 30 April.
The team is encouraging everyone to check which vaccines they and their family still need and to make an appointment with their doctor to get them.
The team is also using the week to remind anyone who was aged 70 or 79 on 1 September 2013 to get their shingles vaccination before 31 August.
The programme will change on 1 September 2014 and individuals aged 70 on that date will be routinely offered the vaccination.
A catch-up programme for those aged 78 or 79 on 1 September will also operate.
Matthew Ashton, Director of Public Health for Knowsley said:
"World Immunisation Week provides a really good opportunity for people to check they are up to date with their immunisations.
"We're all busy people but it really is important to take the time to get the vaccinations you need. Immunisation helps prevent the outbreak of infectious diseases which can sometimes have severe consequences.
"Of course if you do have any concerns about a particular immunisation have a chat with your GP about it."
He added: "Shingles is most common in people aged over 70 years, but by having the vaccine you will be reducing your chances of developing shingles by more than a third."