Parents are being encouraged to allow daughters of secondary school age to carry two condoms to prevent sexually transmitted diseases (STDs) and teenage pregnancy, Disease Control Department chief Dr Pornthep Siriwanarangsan said yesterday.

He cited the results of a study, which showed that 20 per cent of Mathayom 2 students, 40 per cent of Mathayom 5 students and 50-60 per cent of vocational students were having sexual relations.

Read more: The Nation