When will my next vaccination for typhoid be ?

Question

Ive just had it cos im going to thailand for 3 weeks in oct. But when will my next typhoid vaccination be?

Answer 1

There are two vaccines currently recommended by the World Health Organisation for the prevention of typhoid: these are the live, oral Ty21a vaccine (sold as Vivotif Berna) and the injectable Vi capsular polysaccharide vaccine (sold as Typhim Vi). Both are between 50 to 80% protective and are recommended for travellers to areas where typhoid is endemic. There exists an older killed whole-cell vaccine that is still used in countries where the newer preparations are not available, but this vaccine is no longer recommended for use, because it has a higher rate of side effects (mainly pain and inflammation at the site of the injection).

Dosing of typhoid vaccine- Ty21a:

The recommended dose varies according to country.

In the US and Canada, an initial course of 4 doses on alternate days is recommended. Protection is achieved 7 days after the last dose. In the US, a booster dose is recommended after 5 years. In Canada, a booster dose is recommended after 7 years.

In Australia and Europe, and initial course of 3 doses on alternate days is recommended. Protection is achieved 7 days after the last dose. A booster is recommended every 3 years for people living in endemic areas, but every year for people travelling from non-endemic to endemic areas.

Immunization is not always completely effective and at-risk travelers should drink only boiled or bottled water and eat well cooked food. Experimentation with an oral live attenuated typhoid vaccine is now underway and appears promising.

Answer 2

he Typhoid vaccine most people have gives you protection for about three years. If you travel again in 2011, go see your GP for another shot.