We"re being urged not to use antibiotics on colds and flu - by the World Health Organisation.

Antibiotics do not work on colds and flu - and using them when they"re not necessary can reduce their effectiveness when you really need them.

The WHO is urging people not to self-prescribe, or to use old prescriptions for a cough or a cold.

Antibiotics kill bacteria, not viruses - which are responsible for 9 out of 10 sore throats and all influenza.