Influenza:
occurs worldwide during winter. If you are going to be mixing with a lot of people (eg on a cruise ship) and you have not been vaccinated, consider it.

Polio:
Is endemic in many Asian and African developing countries but is rare in countries with high immunisation coverage.
Primary courses:
These can start at any age and in Britain they are part of the normal British Schedule from 2 months of age. Live oral polio vaccine (OPV) is normally used in Britain and given at the same time as Diphtheria, Tetanus and Pertussis. Inactivated poliomyelitis vaccine (IPV) is also available for when OPV is contraindicated (see below)
Boosters for children:
Given 5 years after the primary course and 10 years later (usually mid-teens).
Boosters for adults:
Ten yearly boosters are advised for those travelling to endemic areas. Extra adult boosters are not normally given for life in Britain except for health care workers at possible occupational risk.

Japanese Encephalitis
Is transmitted by mosquitos, but the pig is the intermediate host. Risk is highest in South East Asia in rural rice growing areas where pigs are also kept. Most of the risk is in the rainy season.
90% of infections are not severe but the death rate in those with symptoms can be as high as 30%.
Please see our nurse for advice about whether you may need this jab

Tick-Borne Encephalitis
is due to a virus transmitted by ticks.
It is endemic in forested parts of europe and scandinavia
Peak incidence is late spring and summer.
Please see the nurse to see if you need this jab.