Scientists near the discovery of flu tablet

A pill that fights the flu may be closer than expected.

This is because scientists have discovered that they are developing a drug that imitates the immune system.

The medicine can be a promising trend for a cure, because it can work against different kinds of viruses and is free to do, experts say.

It functions by clinging to the flu virus in order to prevent it from attacking body cells and causing the disease.

The drug developers say it has already shown success in laboratory tests.