Single primary dose for two years of age and above. Booster every two to three years for children immunized under four years of age. The need for revaccination in older children and adults remains unknown. May be given every three years if at high risk. After primary dose, a booster in six to twelve months recommended to complete the series for long-term protection.
Full immunization requires three injections over six months.
For travel of more than six weeks or to rural areas. May not be needed if food and water sources are known to be safe. LIVE ORAL Primary series or booster of tablets over seven days for those over the age of six years. Booster every five years. Booster every two years.