BCG vaccination may also be recommended for older children who have an increased risk of developing TB, such as:
children who have recently arrived from countries with high levels of TB
children who have come into close contact with somebody infected with respiratory TB
BCG vaccination is rarely given to anyone over the age of 16 - and never over the age of 35, because it doesn't work very well in adults. It is, however, given to adults aged between 16 and 35 who are at risk of TB through their work, such as some healthcare workers.